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Arrhenius equation

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is the difference of an enthalpy term and an entropy term multiplied by the absolute temperature. The pre-exponential factor depends primarily on the entropy of activation. The overall expression again takes the form of an Arrhenius exponential (of enthalpy rather than energy) multiplied by a slowly
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are experimentally determined, and represent macroscopic reaction-specific parameters that are not simply related to threshold energies and the success of individual collisions at the molecular level. Consider a particular collision (an elementary reaction) between molecules A and B. The collision
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in all classes of glass-forming matter. The Arrhenius law predicts that the motion of the structural units (atoms, molecules, ions, etc.) should slow down at a slower rate through the glass transition than is experimentally observed. In other words, the structural units slow down at a faster rate
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Given the small temperature range of kinetic studies, it is reasonable to approximate the activation energy as being independent of the temperature. Similarly, under a wide range of practical conditions, the weak temperature dependence of the pre-exponential factor is negligible compared to the
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than is predicted by the Arrhenius law. This observation is made reasonable assuming that the units must overcome an energy barrier by means of a thermal activation energy. The thermal energy must be high enough to allow for translational motion of the units which leads to
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are the result of many individual collisions with differing collision parameters. To probe reaction rates at molecular level, experiments are conducted under near-collisional conditions and this subject is often called molecular reaction dynamics.
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dependence of the pre-exponential factor is observed experimentally". However, if additional evidence is available, from theory and/or from experiment (such as density dependence), there is no obstacle to incisive tests of the Arrhenius law.
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or Arrhenius factor or frequency factor. Arrhenius originally considered A to be a temperature-independent constant for each chemical reaction. However more recent treatments include some temperature dependence – see
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With this equation it can be roughly estimated that the rate of reaction increases by a factor of about 2 to 3 for every 10 Â°C rise in temperature, for common values of activation energy and temperature range.
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angle, the relative translational energy, the internal (particularly vibrational) energy will all determine the chance that the collision will produce a product molecule AB. Macroscopic measurements of
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suggests such a formula for the rates of both forward and reverse reactions. This equation has a vast and important application in determining the rate of chemical reactions and for calculation of
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is the probability that any given collision will result in a reaction. It can be seen that either increasing the temperature or decreasing the activation energy (for example through the use of
249: 3934: 2416: 2752: 609: 550: 66:. It can be used to model the temperature variation of diffusion coefficients, population of crystal vacancies, creep rates, and many other thermally induced processes and reactions. The 3324:{\displaystyle k={\frac {k_{\text{B}}T}{h}}e^{-{\frac {\Delta G^{\ddagger }}{RT}}}={\frac {k_{\text{B}}T}{h}}e^{\frac {\Delta S^{\ddagger }}{R}}e^{-{\frac {\Delta H^{\ddagger }}{RT}}},} 671: 1158: 3427: 3393: 3359: 2790: 1145: 3125:, often much less than 1.00, which is interpreted as the fraction of sufficiently energetic collisions in which the two molecules have the correct mutual orientation to react. 758: 2612: 3458: 2699: 2037: 2010: 1561: 1534: 965: 938: 901: 168: 116: 2153: 768: 2624:
to make the model fit the data, but can have theoretical meaning, for example showing the presence of a range of activation energies or in special cases like the Mott
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However, the rate of reaction varies greatly with temperature, since for a typical process the rate doubles or trebles for a rise in temperature of 10 Â°C.
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in the years 1916–18. In this theory, molecules are supposed to react if they collide with a relative kinetic energy along their line of centers that exceeds
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The modified Arrhenius equation makes explicit the temperature dependence of the pre-exponential factor. The modified equation is usually of the form
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Arrhenius argued that for reactants to transform into products, they must first acquire a minimum amount of energy, called the activation energy
2517:. It has been pointed out that "it is not feasible to establish, on the basis of temperature studies of the rate constant, whether the predicted 480:
are identical to those of the rate constant and will vary depending on the order of the reaction. If the reaction is first order it has the unit
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Bauer, Th.; Lunkenheimer, P.; Loidl, A. (2013). "Cooperativity and the Freezing of Molecular Motion at the Glass Transition".
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is the number of collisions (leading to a reaction or not) per second occurring with the proper orientation to react and
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explains the exponential nature of the relationship, and in one way or another, it is present in all kinetic theories.
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in temperature. However, free energy is itself a temperature dependent quantity. The free energy of activation
1271:{\displaystyle {\frac {d\ln k_{\text{f}}}{dT}}-{\frac {d\ln k_{\text{b}}}{dT}}={\frac {\Delta U^{0}}{RT^{2}}}} 2239: 4648: 4449: 3642: 3599: 3138: 3024:. However for many reactions this agrees poorly with experiment, so the rate constant is written instead as 627: 51: 4403: 3402: 3368: 3334: 3146: 2625: 2279: 1983: 1112: 311: 279: 63: 3017:, so that the collision theory predicts that the pre-exponential factor is equal to the collision number 2787:. The number of binary collisions between two unlike molecules per second per unit volume is found to be 4633: 4565: 4423: 4413: 3566: 3396: 3154: 2660: 2526: 3682:"Über die Dissociationswärme und den Einfluß der Temperatur auf den Dissociationsgrad der Elektrolyte" 731: 4628: 4356: 4146: 4051: 3777: 3657: 2618:
is a dimensionless number of order 1. This is typically regarded as a purely empirical correction or
617:-limited reactions, in which case the pre-exponential factor is dominant and is directly observable. 269: 187: 55: 4638: 4570: 4555: 4498: 3864: 3436: 2677: 2015: 1988: 1563:
are the activation energies associated with the forward and backward reactions respectively, with
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Slot, Thierry K.; Riley, Nathan; Shiju, N. Raveendran; Medlin, J. Will; Rothenberg, Gadi (2020).
3745: 3702: 3461: 2922: 457: 424: 137: 85: 31: 3889: 1484:{\displaystyle {\frac {d\ln k_{\text{b}}}{dT}}={\text{constant}}+{\frac {E_{\text{b}}}{RT^{2}}}} 1371:{\displaystyle {\frac {d\ln k_{\text{f}}}{dT}}={\text{constant}}+{\frac {E_{\text{f}}}{RT^{2}}}} 448:
directly, which is common in physics. The different units are accounted for in using either the
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Another situation where the explanation of the Arrhenius equation parameters falls short is in
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respectively denote the forward and backward reaction rates of the reaction of interest, then
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So, when a reaction has a rate constant that obeys the Arrhenius equation, a plot of ln 
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the activation energy for a reaction. That is, the activation energy is defined to be (−
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is mathematically the exponential of the constant of integration for the respective
4575: 4381: 4288: 4278: 4158: 3959: 3831: 3615: 2939: 2620: 449: 2227:{\displaystyle \ln k={\frac {-E_{\text{a}}}{R}}\left({\frac {1}{T}}\right)+\ln A.} 850:{\displaystyle {\frac {d\ln k_{\text{e}}^{0}}{dT}}={\frac {\Delta U^{0}}{RT^{2}}}} 3826: 3725:"Über die Reaktionsgeschwindigkeit bei der Inversion von Rohrzucker durch Säuren" 4534: 4469: 2670:
The calculations for reaction rate constants involve an energy averaging over a
441: 3553:{\displaystyle \Delta G^{\ddagger }=\Delta H^{\ddagger }-T\Delta S^{\ddagger }} 2773: 1813:{\displaystyle {\frac {d\ln k_{\text{b}}}{dT}}={\frac {E_{\text{b}}}{RT^{2}}}} 1714:{\displaystyle {\frac {d\ln k_{\text{f}}}{dT}}={\frac {E_{\text{f}}}{RT^{2}}}} 673:
factor denotes the fraction of molecules with energy greater than or equal to
130: 70:, developed in 1935, also expresses the relationship between rate and energy. 4095: 3491:
At first sight this looks like an exponential multiplied by a factor that is
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gives a straight line, whose gradient and intercept can be used to determine
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The preceding equation can be broken down into the following two equations:
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Integrating these equations and taking the exponential yields the results
4227:– Using Arrhenius equation for calculating species solubility in polymers 3430: 553: 445: 3986: 3842: 4086: 3789: 1099:{\displaystyle \ln k_{\text{e}}^{0}=\ln k_{\text{f}}-\ln k_{\text{b}}} 444:, which is common in chemistry, while the latter form uses energy per 1021:{\displaystyle k_{\text{e}}^{0}={\frac {k_{\text{f}}}{k_{\text{b}}}}} 481: 3764: 3724: 3681: 2652:, the fraction of molecules that have a kinetic energy greater than 2141:{\displaystyle \ln k=\ln A-{\frac {E_{\text{a}}}{R}}{\frac {1}{T}}.} 178:
as a limit, but this case does not occur under practical conditions.
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is the number of collisions that result in a reaction per second,
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Formula for temperature dependence of rates of chemical reactions
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Avery, H. E. (1974). "4. Dependence of Rate on Temperature".
1973:{\displaystyle k_{\text{b}}=A_{\text{b}}e^{-E_{\text{b}}/RT}} 1898:{\displaystyle k_{\text{f}}=A_{\text{f}}e^{-E_{\text{f}}/RT}} 379:{\displaystyle k=Ae^{\frac {-E_{\text{a}}}{k_{\text{B}}T}},} 3581:
Both the Arrhenius activation energy and the rate constant
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This has the same form as an equation for a straight line:
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Chemical Kinetics: The Study of Reaction Rates in Solution
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Kenneth Connors, Chemical Kinetics, 1990, VCH Publishers
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IUPAC Goldbook definition of modified Arrhenius equation
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Experimental findings suggest that the constants in eq.(
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There are deviations from the Arrhenius law during the
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The original Arrhenius expression above corresponds to
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Limitations of the idea of Arrhenius activation energy
2489:{\displaystyle k=AT^{n}e^{\frac {-E_{\text{a}}}{RT}}.} 1612:{\displaystyle \Delta U^{0}=E_{\text{f}}-E_{\text{b}}} 3501: 3470: 3439: 3405: 3371: 3337: 3163: 3137:, another Arrhenius-like expression, appears in the " 3106: 3032: 3008:{\displaystyle k=z_{AB}e^{\frac {-E_{\text{a}}}{RT}}} 2953: 2793: 2711: 2680: 2535: 2513:. Theoretical analyses yield various predictions for 2431: 2330: 2242: 2156: 2083: 2018: 1991: 1915: 1840: 1744: 1645: 1569: 1542: 1515: 1407: 1294: 1161: 1115: 1036: 975: 946: 919: 879: 771: 734: 714: 679: 630: 568: 509: 324: 196: 140: 88: 4031:(1st ed.). Benjamin/Cummings. pp. 378–83. 4006:(1st ed.). Benjamin/Cummings. pp. 376–78. 728:
of a reaction and the standard equilibrium constant
4614: 4548: 4522: 4478: 4442: 4394: 4355: 4332: 4269: 2505:. Fitted rate constants typically lie in the range 182:The Arrhenius equation gives the dependence of the 3917:"6.2.3.3: The Arrhenius Law – Activation Energies" 3552: 3476: 3452: 3421: 3387: 3353: 3323: 3157:in the 1930s. The Eyring equation can be written: 3112: 3089: 3007: 2883: 2746: 2693: 2606: 2488: 2410: 2266: 2226: 2140: 2031: 2004: 1972: 1897: 1812: 1713: 1611: 1555: 1528: 1483: 1370: 1270: 1139: 1098: 1020: 959: 932: 895: 849: 752: 720: 692: 665: 603: 556:) will result in an increase in rate of reaction. 544: 378: 262:(frequency of collisions resulting in a reaction), 243: 162: 134:Mathematically, at very high temperatures so that 110: 1634:) can be treated as being equal to zero, so that 244:{\displaystyle k=Ae^{\frac {-E_{\text{a}}}{RT}},} 318:Alternatively, the equation may be expressed as 285: 3843:IUPAC Goldbook definition of Arrhenius equation 3573:of the reactants and of the activated complex. 2701:as lower bound and so are often of the type of 2411:{\displaystyle E_{\text{a}}\equiv -R\left_{P}.} 38:is a formula for the temperature dependence of 3718: 3716: 2921:is the temperature which is multiplied by the 4246: 3675: 3673: 2747:{\displaystyle e^{\frac {-E_{\text{a}}}{RT}}} 604:{\displaystyle e^{\frac {-E_{\text{a}}}{RT}}} 545:{\displaystyle e^{\frac {-E_{\text{a}}}{RT}}} 484:, and for that reason it is often called the 8: 3863:(fourth ed.). NY: McGraw-Hill. p.  2636: 46:in 1889, based on the work of Dutch chemist 4027:Laidler, Keith J.; Meiser, John H. (1982). 4002:Laidler, Keith J.; Meiser, John H. (1982). 3801: 3799: 3765:"The development of the Arrhenius equation" 4253: 4239: 4231: 2632:Theoretical interpretation of the equation 4225:Carbon Dioxide solubility in Polyethylene 4140: 4103: 4085: 3820: 3818: 3544: 3525: 3509: 3500: 3469: 3444: 3438: 3413: 3404: 3379: 3370: 3345: 3336: 3299: 3289: 3285: 3268: 3258: 3239: 3232: 3210: 3200: 3196: 3177: 3170: 3162: 3105: 3069: 3059: 3046: 3031: 2987: 2977: 2964: 2952: 2866: 2852: 2838: 2832: 2824: 2814: 2798: 2792: 2726: 2716: 2710: 2685: 2679: 2590: 2570: 2564: 2534: 2465: 2455: 2445: 2430: 2399: 2381: 2355: 2335: 2329: 2241: 2195: 2179: 2169: 2155: 2125: 2114: 2108: 2082: 2023: 2017: 1996: 1990: 1957: 1951: 1943: 1933: 1920: 1914: 1882: 1876: 1868: 1858: 1845: 1839: 1801: 1787: 1781: 1761: 1745: 1743: 1702: 1688: 1682: 1662: 1646: 1644: 1603: 1590: 1577: 1568: 1547: 1541: 1520: 1514: 1472: 1458: 1452: 1444: 1424: 1408: 1406: 1359: 1345: 1339: 1331: 1311: 1295: 1293: 1259: 1244: 1234: 1214: 1198: 1178: 1162: 1160: 1131: 1126: 1114: 1090: 1071: 1052: 1047: 1035: 1010: 1000: 994: 985: 980: 974: 951: 945: 924: 918: 887: 878: 838: 823: 813: 793: 788: 772: 770: 744: 739: 733: 713: 684: 678: 645: 635: 629: 583: 573: 567: 524: 514: 508: 360: 348: 338: 323: 220: 210: 195: 145: 139: 93: 87: 3812:, Third Edition, Harper & Row, p. 42 2945:The rate constant is then calculated as 2637:Arrhenius's concept of activation energy 3669: 3141:" of chemical reactions, formulated by 2705:, which turn out to be proportional to 2316:) times the slope of a plot of ln  708:Van't Hoff argued that the temperature 476:The unit of the pre-exponential factor 4279:Unimolecular nucleophilic substitution 3891:Basic Reaction Kinetics and Mechanisms 666:{\displaystyle e^{\frac {-E_{a}}{RT}}} 613:; except in the case of "barrierless" 402:for the reaction (in the same unit as 4289:Bimolecular nucleophilic substitution 3997: 3995: 3602:, especially for reactions that show 560:temperature dependence of the factor 7: 3935:"15.2: The Equilibrium Constant (K)" 3422:{\displaystyle \Delta H^{\ddagger }} 3388:{\displaystyle \Delta S^{\ddagger }} 3354:{\displaystyle \Delta G^{\ddagger }} 2772:of chemical reactions, developed by 1735: 1636: 1398: 1285: 1140:{\displaystyle \ln k_{\text{e}}^{0}} 762: 4342:Electrophilic aromatic substitution 2525:Another common modification is the 469:, as the multiplier of temperature 431:The only difference is the unit of 4309:Nucleophilic internal substitution 4299:Nucleophilic aromatic substitution 3537: 3518: 3502: 3406: 3372: 3338: 3292: 3261: 3203: 2372: 2358: 1570: 1237: 880: 816: 440:: the former form uses energy per 286:§ Modified Arrhenius equation 54:for the temperature dependence of 25: 4204:(3rd ed.). Harper & Row. 1109:Substituting the expression for 753:{\displaystyle k_{\text{e}}^{0}} 4465:Lindemann–Hinshelwood mechanism 4211:The World of Physical Chemistry 2061:Arrhenius linear plot: ln  82:In almost all practical cases, 50:who had noted in 1884 that the 42:. The equation was proposed by 4705:Eponymous equations of physics 4514:Outer sphere electron transfer 4509:Inner sphere electron transfer 4319:Nucleophilic acyl substitution 4159:10.1103/PhysRevLett.111.225702 3855:Silberberg, Martin S. (2006). 2672:Maxwell–Boltzmann distribution 2607:{\displaystyle k=A\exp \left,} 2389: 2375: 2077:of Arrhenius equation yields: 495:of the reaction. Most simply, 186:of a chemical reaction on the 1: 4679:Diffusion-controlled reaction 3638:Q10 (temperature coefficient) 3604:Langmuir-Hinshelwood kinetics 2648:. At an absolute temperature 4058:, Cambridge University Press 3453:{\displaystyle k_{\text{B}}} 2694:{\displaystyle E_{\text{a}}} 2032:{\displaystyle A_{\text{b}}} 2005:{\displaystyle A_{\text{f}}} 1556:{\displaystyle E_{\text{b}}} 1529:{\displaystyle E_{\text{f}}} 960:{\displaystyle k_{\text{b}}} 933:{\displaystyle k_{\text{f}}} 896:{\displaystyle \Delta U^{0}} 48:Jacobus Henricus van 't Hoff 4334:Electrophilic substitutions 4056:Molecular Reaction Dynamics 3648:Clausius–Clapeyron relation 2909:is the average diameter of 2421:Modified Arrhenius equation 1630: 1624: 1498: 1385: 1149: 163:{\displaystyle E_{a}\ll RT} 111:{\displaystyle E_{a}\gg RT} 4726: 4644:Energy profile (chemistry) 4606:More O'Ferrall–Jencks plot 4271:Nucleophilic substitutions 4213:. Oxford University Press. 3967:University of Pennsylvania 3894:. Springer. pp. 47–58 2931:to convert to energy, and 2761: 2703:incomplete gamma functions 2050: 174:levels off and approaches 4674:Michaelis–Menten kinetics 3723:Arrhenius, S. A. (1889). 3680:Arrhenius, S. A. (1889). 1030:, an equation from which 4601:Potential energy surface 4480:Electron/Proton transfer 4365:Unimolecular elimination 3653:Gibbs–Helmholtz equation 4649:Transition state theory 4450:Intramolecular reaction 4376:Bimolecular elimination 4209:Laidler, K. J. (1993). 4200:Laidler, K. J. (1987). 4191:Pauling, L. C. (1988). 4129:Physical Review Letters 3763:Laidler, K. J. (1984). 3600:heterogeneous catalysis 3139:transition state theory 3129:Transition state theory 2659:can be calculated from 2267:{\displaystyle y=mx+c,} 122:increases rapidly with 4443:Unimolecular reactions 4404:Electrophilic addition 3742:10.1515/zpch-1889-0416 3699:10.1515/zpch-1889-0408 3554: 3478: 3454: 3423: 3389: 3355: 3325: 3114: 3091: 3009: 2885: 2748: 2695: 2626:variable range hopping 2608: 2490: 2412: 2268: 2228: 2142: 2070: 2033: 2006: 1984:pre-exponential factor 1974: 1899: 1814: 1715: 1613: 1557: 1530: 1485: 1372: 1272: 1141: 1100: 1022: 961: 934: 897: 851: 760:exhibit the relation: 754: 722: 694: 667: 605: 546: 380: 312:universal gas constant 280:pre-exponential factor 245: 179: 164: 127: 112: 64:empirical relationship 4710:Statistical mechanics 4634:Rate-determining step 4566:Reactive intermediate 4424:Free-radical addition 4414:Nucleophilic addition 4357:Elimination reactions 4195:. Dover Publications. 3567:statistical mechanics 3555: 3479: 3455: 3424: 3397:entropy of activation 3390: 3356: 3326: 3115: 3113:{\displaystyle \rho } 3092: 3010: 2886: 2749: 2696: 2661:statistical mechanics 2609: 2527:stretched exponential 2491: 2413: 2269: 2229: 2143: 2060: 2034: 2007: 1975: 1900: 1815: 1716: 1614: 1558: 1531: 1486: 1373: 1273: 1142: 1101: 1023: 962: 935: 903:denotes the apposite 898: 852: 755: 723: 695: 693:{\displaystyle E_{a}} 668: 606: 547: 381: 246: 165: 133: 113: 81: 56:equilibrium constants 4629:Equilibrium constant 3960:"Arrhenius Equation" 3939:Chemistry LibreTexts 3921:Chemistry LibreTexts 3658:Cherry blossom front 3643:Van 't Hoff equation 3561:varying function of 3499: 3468: 3437: 3403: 3369: 3335: 3161: 3104: 3030: 2951: 2791: 2768:One approach is the 2709: 2678: 2533: 2429: 2328: 2240: 2154: 2150:Rearranging yields: 2081: 2016: 1989: 1913: 1838: 1742: 1643: 1567: 1540: 1513: 1405: 1292: 1159: 1113: 1034: 973: 944: 917: 877: 769: 732: 712: 677: 628: 566: 507: 322: 270:absolute temperature 194: 188:absolute temperature 138: 86: 60:energy of activation 52:van 't Hoff equation 4639:Reaction coordinate 4571:Radical (chemistry) 4556:Elementary reaction 4499:Grotthuss mechanism 4263:reaction mechanisms 4151:2013PhRvL.111v5702B 4080:(40): 11024–11029. 3782:1984JChEd..61..494L 3571:partition functions 2837: 2041:indefinite integral 1136: 1106:naturally follows. 1057: 990: 798: 749: 4664:Arrhenius equation 4434:Oxidative addition 4396:Addition reactions 4087:10.1039/D0SC04118A 4029:Physical Chemistry 4004:Physical Chemistry 3550: 3474: 3462:Boltzmann constant 3450: 3419: 3385: 3351: 3321: 3110: 3087: 3005: 2923:Boltzmann constant 2881: 2820: 2744: 2691: 2604: 2486: 2408: 2264: 2224: 2138: 2071: 2029: 2002: 1970: 1895: 1810: 1711: 1609: 1553: 1526: 1481: 1368: 1268: 1137: 1122: 1096: 1043: 1018: 976: 957: 930: 893: 847: 784: 750: 735: 718: 690: 663: 601: 542: 458:Boltzmann constant 425:Boltzmann constant 376: 241: 180: 160: 128: 108: 36:Arrhenius equation 32:physical chemistry 4700:Chemical kinetics 4687: 4686: 4659:Activated complex 4654:Activation energy 4616:Chemical kinetics 4561:Reaction dynamics 4460:Photodissociation 4202:Chemical Kinetics 4193:General Chemistry 3810:Chemical Kinetics 3790:10.1021/ed061p494 3628:Accelerated aging 3618:of the material. 3477:{\displaystyle h} 3447: 3314: 3278: 3252: 3242: 3225: 3190: 3180: 3084: 3072: 3002: 2990: 2900:Avogadro constant 2876: 2875: 2855: 2817: 2741: 2729: 2688: 2665:activation energy 2663:. The concept of 2584: 2480: 2468: 2393: 2338: 2203: 2189: 2182: 2133: 2123: 2117: 2075:natural logarithm 2026: 1999: 1954: 1936: 1923: 1879: 1861: 1848: 1830: 1829: 1808: 1790: 1776: 1764: 1731: 1730: 1709: 1691: 1677: 1665: 1606: 1593: 1550: 1523: 1507: 1506: 1479: 1461: 1447: 1439: 1427: 1394: 1393: 1366: 1348: 1334: 1326: 1314: 1266: 1229: 1217: 1193: 1181: 1129: 1093: 1074: 1050: 1016: 1013: 1003: 983: 954: 927: 871: 870: 845: 808: 791: 742: 721:{\displaystyle T} 660: 598: 586: 539: 527: 493:attempt frequency 400:activation energy 370: 363: 351: 304:for the reaction, 302:activation energy 235: 223: 16:(Redirected from 4717: 4591:Collision theory 4540:Matrix isolation 4494:Harpoon reaction 4371:E1cB-elimination 4255: 4248: 4241: 4232: 4214: 4205: 4196: 4179: 4178: 4144: 4124: 4118: 4117: 4107: 4089: 4074:Chemical Science 4065: 4059: 4049: 4043: 4042: 4024: 4018: 4017: 3999: 3990: 3984: 3978: 3977: 3975: 3973: 3964: 3956: 3950: 3949: 3947: 3946: 3931: 3925: 3924: 3913: 3907: 3906: 3901: 3899: 3885: 3879: 3878: 3862: 3852: 3846: 3840: 3834: 3822: 3813: 3803: 3794: 3793: 3760: 3754: 3753: 3720: 3711: 3710: 3677: 3611:glass transition 3559: 3557: 3556: 3551: 3549: 3548: 3530: 3529: 3514: 3513: 3483: 3481: 3480: 3475: 3459: 3457: 3456: 3451: 3449: 3448: 3445: 3428: 3426: 3425: 3420: 3418: 3417: 3394: 3392: 3391: 3386: 3384: 3383: 3360: 3358: 3357: 3352: 3350: 3349: 3330: 3328: 3327: 3322: 3317: 3316: 3315: 3313: 3305: 3304: 3303: 3290: 3280: 3279: 3274: 3273: 3272: 3259: 3253: 3248: 3244: 3243: 3240: 3233: 3228: 3227: 3226: 3224: 3216: 3215: 3214: 3201: 3191: 3186: 3182: 3181: 3178: 3171: 3121:is an empirical 3119: 3117: 3116: 3111: 3098: 3096: 3094: 3093: 3088: 3086: 3085: 3083: 3075: 3074: 3073: 3070: 3060: 3054: 3053: 3016: 3014: 3012: 3011: 3006: 3004: 3003: 3001: 2993: 2992: 2991: 2988: 2978: 2972: 2971: 2890: 2888: 2887: 2882: 2877: 2874: 2873: 2861: 2857: 2856: 2853: 2840: 2839: 2836: 2831: 2819: 2818: 2815: 2806: 2805: 2770:collision theory 2764:Collision theory 2758:Collision theory 2753: 2751: 2750: 2745: 2743: 2742: 2740: 2732: 2731: 2730: 2727: 2717: 2700: 2698: 2697: 2692: 2690: 2689: 2686: 2613: 2611: 2610: 2605: 2600: 2596: 2595: 2594: 2589: 2585: 2583: 2575: 2574: 2565: 2512: 2504: 2495: 2493: 2492: 2487: 2482: 2481: 2479: 2471: 2470: 2469: 2466: 2456: 2450: 2449: 2417: 2415: 2414: 2409: 2404: 2403: 2398: 2394: 2392: 2385: 2370: 2356: 2340: 2339: 2336: 2273: 2271: 2270: 2265: 2233: 2231: 2230: 2225: 2208: 2204: 2196: 2190: 2185: 2184: 2183: 2180: 2170: 2147: 2145: 2144: 2139: 2134: 2126: 2124: 2119: 2118: 2115: 2109: 2038: 2036: 2035: 2030: 2028: 2027: 2024: 2011: 2009: 2008: 2003: 2001: 2000: 1997: 1981: 1979: 1977: 1976: 1971: 1969: 1968: 1961: 1956: 1955: 1952: 1938: 1937: 1934: 1925: 1924: 1921: 1906: 1904: 1902: 1901: 1896: 1894: 1893: 1886: 1881: 1880: 1877: 1863: 1862: 1859: 1850: 1849: 1846: 1819: 1817: 1816: 1811: 1809: 1807: 1806: 1805: 1792: 1791: 1788: 1782: 1777: 1775: 1767: 1766: 1765: 1762: 1746: 1736: 1720: 1718: 1717: 1712: 1710: 1708: 1707: 1706: 1693: 1692: 1689: 1683: 1678: 1676: 1668: 1667: 1666: 1663: 1647: 1637: 1618: 1616: 1615: 1610: 1608: 1607: 1604: 1595: 1594: 1591: 1582: 1581: 1562: 1560: 1559: 1554: 1552: 1551: 1548: 1535: 1533: 1532: 1527: 1525: 1524: 1521: 1490: 1488: 1487: 1482: 1480: 1478: 1477: 1476: 1463: 1462: 1459: 1453: 1448: 1445: 1440: 1438: 1430: 1429: 1428: 1425: 1409: 1399: 1377: 1375: 1374: 1369: 1367: 1365: 1364: 1363: 1350: 1349: 1346: 1340: 1335: 1332: 1327: 1325: 1317: 1316: 1315: 1312: 1296: 1286: 1279: 1277: 1275: 1274: 1269: 1267: 1265: 1264: 1263: 1250: 1249: 1248: 1235: 1230: 1228: 1220: 1219: 1218: 1215: 1199: 1194: 1192: 1184: 1183: 1182: 1179: 1163: 1146: 1144: 1143: 1138: 1135: 1130: 1127: 1105: 1103: 1102: 1097: 1095: 1094: 1091: 1076: 1075: 1072: 1056: 1051: 1048: 1029: 1027: 1025: 1024: 1019: 1017: 1015: 1014: 1011: 1005: 1004: 1001: 995: 989: 984: 981: 966: 964: 963: 958: 956: 955: 952: 939: 937: 936: 931: 929: 928: 925: 902: 900: 899: 894: 892: 891: 865: 856: 854: 853: 848: 846: 844: 843: 842: 829: 828: 827: 814: 809: 807: 799: 797: 792: 789: 773: 763: 759: 757: 756: 751: 748: 743: 740: 727: 725: 724: 719: 699: 697: 696: 691: 689: 688: 672: 670: 669: 664: 662: 661: 659: 651: 650: 649: 636: 612: 610: 608: 607: 602: 600: 599: 597: 589: 588: 587: 584: 574: 551: 549: 548: 543: 541: 540: 538: 530: 529: 528: 525: 515: 502: 498: 479: 472: 468: 455: 439: 422: 397: 385: 383: 382: 377: 372: 371: 369: 365: 364: 361: 354: 353: 352: 349: 339: 309: 299: 277: 267: 257: 250: 248: 247: 242: 237: 236: 234: 226: 225: 224: 221: 211: 169: 167: 166: 161: 150: 149: 117: 115: 114: 109: 98: 97: 44:Svante Arrhenius 21: 4725: 4724: 4720: 4719: 4718: 4716: 4715: 4714: 4690: 4689: 4688: 4683: 4669:Eyring equation 4610: 4581:Stereochemistry 4544: 4530:Solvent effects 4518: 4474: 4438: 4419: 4409: 4390: 4385: 4351: 4347: 4328: 4324: 4314: 4304: 4294: 4284: 4265: 4259: 4221: 4208: 4199: 4190: 4187: 4182: 4126: 4125: 4121: 4067: 4066: 4062: 4050: 4046: 4039: 4026: 4025: 4021: 4014: 4001: 4000: 3993: 3985: 3981: 3971: 3969: 3962: 3958: 3957: 3953: 3944: 3942: 3933: 3932: 3928: 3915: 3914: 3910: 3897: 3895: 3887: 3886: 3882: 3875: 3854: 3853: 3849: 3841: 3837: 3823: 3816: 3804: 3797: 3762: 3761: 3757: 3722: 3721: 3714: 3679: 3678: 3671: 3667: 3633:Eyring equation 3624: 3579: 3540: 3521: 3505: 3497: 3496: 3486:Planck constant 3466: 3465: 3440: 3435: 3434: 3433:of activation, 3409: 3401: 3400: 3375: 3367: 3366: 3365:of activation, 3341: 3333: 3332: 3306: 3295: 3291: 3281: 3264: 3260: 3254: 3235: 3234: 3217: 3206: 3202: 3192: 3173: 3172: 3159: 3158: 3151:Michael Polanyi 3135:Eyring equation 3131: 3102: 3101: 3076: 3065: 3061: 3055: 3042: 3028: 3027: 3025: 3022: 2994: 2983: 2979: 2973: 2960: 2949: 2948: 2946: 2936: 2930: 2907: 2896: 2862: 2848: 2841: 2810: 2794: 2789: 2788: 2786: 2766: 2760: 2733: 2722: 2718: 2712: 2707: 2706: 2681: 2676: 2675: 2658: 2647: 2639: 2634: 2576: 2566: 2560: 2559: 2555: 2551: 2531: 2530: 2506: 2499: 2472: 2461: 2457: 2451: 2441: 2427: 2426: 2423: 2371: 2357: 2351: 2350: 2331: 2326: 2325: 2303: 2238: 2237: 2191: 2175: 2171: 2152: 2151: 2110: 2079: 2078: 2055: 2049: 2019: 2014: 2013: 1992: 1987: 1986: 1947: 1939: 1929: 1916: 1911: 1910: 1908: 1872: 1864: 1854: 1841: 1836: 1835: 1833: 1797: 1793: 1783: 1768: 1757: 1747: 1740: 1739: 1698: 1694: 1684: 1669: 1658: 1648: 1641: 1640: 1599: 1586: 1573: 1565: 1564: 1543: 1538: 1537: 1516: 1511: 1510: 1468: 1464: 1454: 1431: 1420: 1410: 1403: 1402: 1355: 1351: 1341: 1318: 1307: 1297: 1290: 1289: 1255: 1251: 1240: 1236: 1221: 1210: 1200: 1185: 1174: 1164: 1157: 1156: 1154: 1111: 1110: 1086: 1067: 1032: 1031: 1006: 996: 971: 970: 968: 947: 942: 941: 920: 915: 914: 908:internal energy 883: 875: 874: 863: 834: 830: 819: 815: 800: 774: 767: 766: 730: 729: 710: 709: 706: 680: 675: 674: 652: 641: 637: 631: 626: 625: 590: 579: 575: 569: 564: 563: 561: 531: 520: 516: 510: 505: 504: 500: 496: 477: 470: 467: 461: 453: 438: 432: 421: 415: 408: 396: 390: 356: 355: 344: 340: 334: 320: 319: 307: 298: 292: 275: 265: 255: 227: 216: 212: 206: 192: 191: 141: 136: 135: 89: 84: 83: 76: 68:Eyring equation 28: 23: 22: 15: 12: 11: 5: 4723: 4721: 4713: 4712: 4707: 4702: 4692: 4691: 4685: 4684: 4682: 4681: 4676: 4671: 4666: 4661: 4656: 4651: 4646: 4641: 4636: 4631: 4626: 4620: 4618: 4612: 4611: 4609: 4608: 4603: 4598: 4593: 4588: 4583: 4578: 4573: 4568: 4563: 4558: 4552: 4550: 4549:Related topics 4546: 4545: 4543: 4542: 4537: 4532: 4526: 4524: 4523:Medium effects 4520: 4519: 4517: 4516: 4511: 4506: 4501: 4496: 4491: 4485: 4483: 4476: 4475: 4473: 4472: 4467: 4462: 4457: 4452: 4446: 4444: 4440: 4439: 4437: 4436: 4431: 4426: 4421: 4417: 4411: 4407: 4400: 4398: 4392: 4391: 4389: 4388: 4383: 4379: 4373: 4368: 4361: 4359: 4353: 4352: 4350: 4349: 4345: 4338: 4336: 4330: 4329: 4327: 4326: 4322: 4316: 4312: 4306: 4302: 4296: 4292: 4286: 4282: 4275: 4273: 4267: 4266: 4260: 4258: 4257: 4250: 4243: 4235: 4229: 4228: 4220: 4219:External links 4217: 4216: 4215: 4206: 4197: 4186: 4183: 4181: 4180: 4135:(22): 225702. 4119: 4060: 4044: 4037: 4019: 4012: 3991: 3979: 3951: 3926: 3908: 3880: 3873: 3847: 3835: 3814: 3806:Laidler, K. J. 3795: 3776:(6): 494–498. 3770:J. Chem. Educ. 3755: 3730:Z. Phys. Chem. 3712: 3687:Z. Phys. Chem. 3668: 3666: 3663: 3662: 3661: 3655: 3650: 3645: 3640: 3635: 3630: 3623: 3620: 3578: 3575: 3569:involving the 3547: 3543: 3539: 3536: 3533: 3528: 3524: 3520: 3517: 3512: 3508: 3504: 3473: 3443: 3416: 3412: 3408: 3382: 3378: 3374: 3348: 3344: 3340: 3320: 3312: 3309: 3302: 3298: 3294: 3288: 3284: 3277: 3271: 3267: 3263: 3257: 3251: 3247: 3238: 3231: 3223: 3220: 3213: 3209: 3205: 3199: 3195: 3189: 3185: 3176: 3169: 3166: 3130: 3127: 3109: 3082: 3079: 3068: 3064: 3058: 3052: 3049: 3045: 3041: 3038: 3035: 3020: 3000: 2997: 2986: 2982: 2976: 2970: 2967: 2963: 2959: 2956: 2934: 2928: 2905: 2894: 2880: 2872: 2869: 2865: 2860: 2851: 2847: 2844: 2835: 2830: 2827: 2823: 2813: 2809: 2804: 2801: 2797: 2784: 2762:Main article: 2759: 2756: 2739: 2736: 2725: 2721: 2715: 2684: 2656: 2645: 2638: 2635: 2633: 2630: 2603: 2599: 2593: 2588: 2582: 2579: 2573: 2569: 2563: 2558: 2554: 2550: 2547: 2544: 2541: 2538: 2485: 2478: 2475: 2464: 2460: 2454: 2448: 2444: 2440: 2437: 2434: 2422: 2419: 2407: 2402: 2397: 2391: 2388: 2384: 2380: 2377: 2374: 2369: 2366: 2363: 2360: 2354: 2349: 2346: 2343: 2334: 2301: 2263: 2260: 2257: 2254: 2251: 2248: 2245: 2223: 2220: 2217: 2214: 2211: 2207: 2202: 2199: 2194: 2188: 2178: 2174: 2168: 2165: 2162: 2159: 2137: 2132: 2129: 2122: 2113: 2107: 2104: 2101: 2098: 2095: 2092: 2089: 2086: 2053:Arrhenius plot 2051:Main article: 2048: 2047:Arrhenius plot 2045: 2022: 1995: 1967: 1964: 1960: 1950: 1946: 1942: 1932: 1928: 1919: 1892: 1889: 1885: 1875: 1871: 1867: 1857: 1853: 1844: 1828: 1827: 1822: 1820: 1804: 1800: 1796: 1786: 1780: 1774: 1771: 1760: 1756: 1753: 1750: 1729: 1728: 1723: 1721: 1705: 1701: 1697: 1687: 1681: 1675: 1672: 1661: 1657: 1654: 1651: 1602: 1598: 1589: 1585: 1580: 1576: 1572: 1546: 1519: 1505: 1504: 1493: 1491: 1475: 1471: 1467: 1457: 1451: 1443: 1437: 1434: 1423: 1419: 1416: 1413: 1392: 1391: 1380: 1378: 1362: 1358: 1354: 1344: 1338: 1330: 1324: 1321: 1310: 1306: 1303: 1300: 1262: 1258: 1254: 1247: 1243: 1239: 1233: 1227: 1224: 1213: 1209: 1206: 1203: 1197: 1191: 1188: 1177: 1173: 1170: 1167: 1134: 1125: 1121: 1118: 1089: 1085: 1082: 1079: 1070: 1066: 1063: 1060: 1055: 1046: 1042: 1039: 1009: 999: 993: 988: 979: 950: 923: 910:change value. 890: 886: 882: 869: 868: 859: 857: 841: 837: 833: 826: 822: 818: 812: 806: 803: 796: 787: 783: 780: 777: 747: 738: 717: 705: 702: 687: 683: 658: 655: 648: 644: 640: 634: 596: 593: 582: 578: 572: 537: 534: 523: 519: 513: 465: 436: 429: 428: 419: 413: 406: 394: 375: 368: 359: 347: 343: 337: 333: 330: 327: 316: 315: 305: 296: 290: 273: 263: 240: 233: 230: 219: 215: 209: 205: 202: 199: 159: 156: 153: 148: 144: 107: 104: 101: 96: 92: 75: 72: 40:reaction rates 26: 24: 14: 13: 10: 9: 6: 4: 3: 2: 4722: 4711: 4708: 4706: 4703: 4701: 4698: 4697: 4695: 4680: 4677: 4675: 4672: 4670: 4667: 4665: 4662: 4660: 4657: 4655: 4652: 4650: 4647: 4645: 4642: 4640: 4637: 4635: 4632: 4630: 4627: 4625: 4624:Rate equation 4622: 4621: 4619: 4617: 4613: 4607: 4604: 4602: 4599: 4597: 4596:Arrow pushing 4594: 4592: 4589: 4587: 4584: 4582: 4579: 4577: 4574: 4572: 4569: 4567: 4564: 4562: 4559: 4557: 4554: 4553: 4551: 4547: 4541: 4538: 4536: 4533: 4531: 4528: 4527: 4525: 4521: 4515: 4512: 4510: 4507: 4505: 4504:Marcus theory 4502: 4500: 4497: 4495: 4492: 4490: 4487: 4486: 4484: 4481: 4477: 4471: 4468: 4466: 4463: 4461: 4458: 4456: 4455:Isomerization 4453: 4451: 4448: 4447: 4445: 4441: 4435: 4432: 4430: 4429:Cycloaddition 4427: 4425: 4422: 4415: 4412: 4405: 4402: 4401: 4399: 4397: 4393: 4387: 4380: 4377: 4374: 4372: 4369: 4366: 4363: 4362: 4360: 4358: 4354: 4343: 4340: 4339: 4337: 4335: 4331: 4320: 4317: 4310: 4307: 4300: 4297: 4290: 4287: 4280: 4277: 4276: 4274: 4272: 4268: 4264: 4256: 4251: 4249: 4244: 4242: 4237: 4236: 4233: 4226: 4223: 4222: 4218: 4212: 4207: 4203: 4198: 4194: 4189: 4188: 4184: 4176: 4172: 4168: 4164: 4160: 4156: 4152: 4148: 4143: 4138: 4134: 4130: 4123: 4120: 4115: 4111: 4106: 4101: 4097: 4093: 4088: 4083: 4079: 4075: 4071: 4064: 4061: 4057: 4053: 4048: 4045: 4040: 4038:0-8053-5682-7 4034: 4030: 4023: 4020: 4015: 4013:0-8053-5682-7 4009: 4005: 3998: 3996: 3992: 3988: 3983: 3980: 3968: 3961: 3955: 3952: 3940: 3936: 3930: 3927: 3923:. 2013-10-02. 3922: 3918: 3912: 3909: 3905: 3893: 3892: 3884: 3881: 3876: 3874:0-07-111658-3 3870: 3866: 3861: 3860: 3851: 3848: 3844: 3839: 3836: 3833: 3829: 3828: 3821: 3819: 3815: 3811: 3807: 3802: 3800: 3796: 3791: 3787: 3783: 3779: 3775: 3772: 3771: 3766: 3759: 3756: 3751: 3747: 3743: 3739: 3735: 3732: 3731: 3726: 3719: 3717: 3713: 3708: 3704: 3700: 3696: 3692: 3689: 3688: 3683: 3676: 3674: 3670: 3664: 3659: 3656: 3654: 3651: 3649: 3646: 3644: 3641: 3639: 3636: 3634: 3631: 3629: 3626: 3625: 3621: 3619: 3617: 3612: 3607: 3605: 3601: 3596: 3593: 3589: 3584: 3576: 3574: 3572: 3568: 3564: 3545: 3541: 3534: 3531: 3526: 3522: 3515: 3510: 3506: 3494: 3489: 3487: 3471: 3463: 3441: 3432: 3414: 3410: 3398: 3380: 3376: 3364: 3346: 3342: 3318: 3310: 3307: 3300: 3296: 3286: 3282: 3275: 3269: 3265: 3255: 3249: 3245: 3236: 3229: 3221: 3218: 3211: 3207: 3197: 3193: 3187: 3183: 3174: 3167: 3164: 3156: 3152: 3148: 3144: 3143:Eugene Wigner 3140: 3136: 3128: 3126: 3124: 3123:steric factor 3120: 3107: 3080: 3077: 3066: 3062: 3056: 3050: 3047: 3043: 3039: 3036: 3033: 3023: 2998: 2995: 2984: 2980: 2974: 2968: 2965: 2961: 2957: 2954: 2943: 2941: 2937: 2927: 2924: 2920: 2916: 2912: 2908: 2901: 2897: 2878: 2870: 2867: 2863: 2858: 2849: 2845: 2842: 2833: 2828: 2825: 2821: 2811: 2807: 2802: 2799: 2795: 2783: 2779: 2778:William Lewis 2775: 2771: 2765: 2757: 2755: 2737: 2734: 2723: 2719: 2713: 2704: 2682: 2673: 2668: 2666: 2662: 2655: 2651: 2644: 2631: 2629: 2627: 2623: 2622: 2617: 2601: 2597: 2591: 2586: 2580: 2577: 2571: 2567: 2561: 2556: 2552: 2548: 2545: 2542: 2539: 2536: 2528: 2523: 2520: 2516: 2510: 2502: 2496: 2483: 2476: 2473: 2462: 2458: 2452: 2446: 2442: 2438: 2435: 2432: 2420: 2418: 2405: 2400: 2395: 2386: 2382: 2378: 2367: 2364: 2361: 2352: 2347: 2344: 2341: 2332: 2323: 2319: 2315: 2311: 2307: 2300: 2296: 2292: 2287: 2285: 2281: 2277: 2261: 2258: 2255: 2252: 2249: 2246: 2243: 2234: 2221: 2218: 2215: 2212: 2209: 2205: 2200: 2197: 2192: 2186: 2176: 2172: 2166: 2163: 2160: 2157: 2148: 2135: 2130: 2127: 2120: 2111: 2105: 2102: 2099: 2096: 2093: 2090: 2087: 2084: 2076: 2068: 2064: 2059: 2054: 2046: 2044: 2043:in question. 2042: 2020: 1993: 1985: 1982:, where each 1965: 1962: 1958: 1948: 1944: 1940: 1930: 1926: 1917: 1890: 1887: 1883: 1873: 1869: 1865: 1855: 1851: 1842: 1826: 1823: 1821: 1802: 1798: 1794: 1784: 1778: 1772: 1769: 1758: 1754: 1751: 1748: 1738: 1737: 1734: 1727: 1724: 1722: 1703: 1699: 1695: 1685: 1679: 1673: 1670: 1659: 1655: 1652: 1649: 1639: 1638: 1635: 1633: 1632: 1627: 1626: 1620: 1600: 1596: 1587: 1583: 1578: 1574: 1544: 1517: 1503: 1501: 1500: 1494: 1492: 1473: 1469: 1465: 1455: 1449: 1441: 1435: 1432: 1421: 1417: 1414: 1411: 1401: 1400: 1397: 1390: 1388: 1387: 1381: 1379: 1360: 1356: 1352: 1342: 1336: 1328: 1322: 1319: 1308: 1304: 1301: 1298: 1288: 1287: 1284: 1281: 1260: 1256: 1252: 1245: 1241: 1231: 1225: 1222: 1211: 1207: 1204: 1201: 1195: 1189: 1186: 1175: 1171: 1168: 1165: 1153:), we obtain 1152: 1151: 1132: 1123: 1119: 1116: 1107: 1087: 1083: 1080: 1077: 1068: 1064: 1061: 1058: 1053: 1044: 1040: 1037: 1007: 997: 991: 986: 977: 948: 921: 911: 909: 906: 888: 884: 867: 860: 858: 839: 835: 831: 824: 820: 810: 804: 801: 794: 785: 781: 778: 775: 765: 764: 761: 745: 736: 715: 703: 701: 685: 681: 656: 653: 646: 642: 638: 632: 622: 618: 616: 594: 591: 580: 576: 570: 557: 555: 535: 532: 521: 517: 511: 494: 490: 488: 483: 474: 464: 459: 451: 447: 443: 435: 426: 418: 414: 411: 405: 401: 393: 389: 388: 387: 373: 366: 357: 345: 341: 335: 331: 328: 325: 313: 306: 303: 300:is the molar 295: 291: 288: 287: 281: 274: 271: 264: 261: 260:rate constant 254: 253: 252: 238: 231: 228: 217: 213: 207: 203: 200: 197: 189: 185: 184:rate constant 177: 173: 157: 154: 151: 146: 142: 132: 125: 121: 105: 102: 99: 94: 90: 80: 73: 71: 69: 65: 61: 57: 53: 49: 45: 41: 37: 33: 19: 18:Arrhenius law 4663: 4576:Molecularity 4210: 4201: 4192: 4185:Bibliography 4132: 4128: 4122: 4077: 4073: 4063: 4055: 4052:Levine, R.D. 4047: 4028: 4022: 4003: 3982: 3970:. Retrieved 3966: 3954: 3943:. Retrieved 3941:. 2016-03-11 3938: 3929: 3920: 3911: 3903: 3896:. Retrieved 3890: 3883: 3858: 3850: 3838: 3832:Google Books 3825: 3809: 3773: 3768: 3758: 3733: 3728: 3690: 3685: 3616:viscous flow 3608: 3597: 3591: 3587: 3582: 3580: 3562: 3492: 3490: 3363:Gibbs energy 3147:Henry Eyring 3132: 3100: 3018: 2944: 2940:reduced mass 2932: 2925: 2918: 2914: 2910: 2903: 2892: 2781: 2767: 2669: 2664: 2653: 2649: 2642: 2640: 2621:fudge factor 2619: 2615: 2524: 2518: 2514: 2508: 2500: 2497: 2424: 2321: 2317: 2313: 2309: 2305: 2298: 2294: 2290: 2288: 2283: 2275: 2235: 2149: 2072: 2066: 2062: 1831: 1824: 1732: 1725: 1629: 1623: 1621: 1508: 1497: 1495: 1395: 1384: 1382: 1282: 1148: 1108: 912: 872: 861: 707: 623: 619: 558: 492: 485: 475: 462: 450:gas constant 433: 430: 416: 409: 403: 391: 317: 293: 284: 181: 175: 171: 123: 119: 35: 29: 4535:Cage effect 4470:RRKM theory 4386:elimination 3898:18 December 3155:M. G. Evans 2073:Taking the 4694:Categories 3945:2023-06-27 3736:: 226–48. 3693:: 96–116. 3665:References 2774:Max Trautz 2280:reciprocal 2065:against 1/ 1628:) and eq.( 704:Derivation 4586:Catalysis 4482:reactions 4142:1306.4630 4096:2041-6520 3859:Chemistry 3750:100032801 3707:202553486 3546:‡ 3538:Δ 3532:− 3527:‡ 3519:Δ 3511:‡ 3503:Δ 3415:‡ 3407:Δ 3381:‡ 3373:Δ 3347:‡ 3339:Δ 3301:‡ 3293:Δ 3287:− 3270:‡ 3262:Δ 3212:‡ 3204:Δ 3198:− 3108:ρ 3063:− 3040:ρ 2981:− 2864:μ 2846:π 2720:− 2592:β 2557:− 2549:⁡ 2459:− 2373:∂ 2365:⁡ 2359:∂ 2345:− 2342:≡ 2216:⁡ 2173:− 2161:⁡ 2106:− 2100:⁡ 2088:⁡ 1945:− 1870:− 1755:⁡ 1656:⁡ 1597:− 1571:Δ 1418:⁡ 1305:⁡ 1238:Δ 1208:⁡ 1196:− 1172:⁡ 1120:⁡ 1084:⁡ 1078:− 1065:⁡ 1041:⁡ 881:Δ 817:Δ 782:⁡ 639:− 615:diffusion 577:− 554:catalysts 518:− 487:frequency 456:, or the 342:− 214:− 152:≪ 100:≫ 4175:13720989 4167:24329455 4114:34123192 3622:See also 3431:enthalpy 2507:−1 < 1446:constant 1333:constant 905:standard 446:molecule 74:Equation 4147:Bibcode 4105:8162257 4054:(2005) 3972:27 June 3808:(1987) 3778:Bibcode 3484:is the 3460:is the 3429:is the 3395:is the 3361:is the 3099:. Here 3097:⁠ 3026:⁠ 3015:⁠ 2947:⁠ 2938:is the 2898:is the 2320:vs. (1/ 2293:versus 2278:is the 1980:⁠ 1909:⁠ 1905:⁠ 1834:⁠ 1278:⁠ 1155:⁠ 1147:in eq.( 1028:⁠ 969:⁠ 611:⁠ 562:⁠ 423:is the 398:is the 310:is the 278:is the 268:is the 258:is the 4261:Basic 4173:  4165:  4112:  4102:  4094:  4035:  4010:  3871:  3748:  3705:  3493:linear 3464:, and 3331:where 2891:where 2614:where 2511:< 1 2310:define 2274:where 1509:where 873:where 489:factor 386:where 289:below. 251:where 34:, the 4489:Redox 4325:Acyl) 4171:S2CID 4137:arXiv 3963:(PDF) 3746:S2CID 3703:S2CID 2674:with 2529:form 1396:and 4378:(E2) 4367:(E1) 4163:PMID 4110:PMID 4092:ISSN 4033:ISBN 4008:ISBN 3974:2023 3900:2023 3869:ISBN 3590:and 3153:and 3133:The 2913:and 2776:and 2304:and 1907:and 1733:and 1536:and 940:and 913:Let 624:The 442:mole 118:and 4348:Ar) 4305:Ar) 4155:doi 4133:111 4100:PMC 4082:doi 3865:696 3830:at 3786:doi 3738:doi 3695:doi 2546:exp 2503:= 0 2324:): 2282:of 2012:or 491:or 190:as 30:In 4696:: 4416:(A 4406:(A 4344:(S 4321:(S 4315:i) 4311:(S 4301:(S 4295:2) 4291:(S 4285:1) 4281:(S 4169:. 4161:. 4153:. 4145:. 4131:. 4108:. 4098:. 4090:. 4078:11 4076:. 4072:. 3994:^ 3965:. 3937:. 3919:. 3902:. 3867:. 3817:^ 3798:^ 3784:. 3774:61 3767:. 3744:. 3727:. 3715:^ 3701:. 3684:. 3672:^ 3488:. 3399:, 3149:, 3145:, 3021:AB 2942:. 2935:AB 2917:, 2906:AB 2902:, 2754:. 2628:. 2362:ln 2286:. 2213:ln 2158:ln 2097:ln 2085:ln 1825:() 1752:ln 1726:() 1653:ln 1619:. 1415:ln 1302:ln 1280:. 1205:ln 1169:ln 1117:ln 1081:ln 1062:ln 1038:ln 779:ln 700:. 473:. 460:, 452:, 412:), 170:, 4420:) 4418:N 4410:) 4408:E 4384:i 4382:E 4346:E 4323:N 4313:N 4303:N 4293:N 4283:N 4254:e 4247:t 4240:v 4177:. 4157:: 4149:: 4139:: 4116:. 4084:: 4041:. 4016:. 3989:. 3976:. 3948:. 3877:. 3845:. 3792:. 3788:: 3780:: 3752:. 3740:: 3734:4 3709:. 3697:: 3691:4 3592:k 3588:E 3583:k 3563:T 3542:S 3535:T 3523:H 3516:= 3507:G 3472:h 3446:B 3442:k 3411:H 3377:S 3343:G 3319:, 3311:T 3308:R 3297:H 3283:e 3276:R 3266:S 3256:e 3250:h 3246:T 3241:B 3237:k 3230:= 3222:T 3219:R 3208:G 3194:e 3188:h 3184:T 3179:B 3175:k 3168:= 3165:k 3081:T 3078:R 3071:a 3067:E 3057:e 3051:B 3048:A 3044:z 3037:= 3034:k 3019:z 2999:T 2996:R 2989:a 2985:E 2975:e 2969:B 2966:A 2962:z 2958:= 2955:k 2933:Îź 2929:B 2926:k 2919:T 2915:B 2911:A 2904:d 2895:A 2893:N 2879:, 2871:B 2868:A 2859:T 2854:B 2850:k 2843:8 2834:2 2829:B 2826:A 2822:d 2816:A 2812:N 2808:= 2803:B 2800:A 2796:z 2785:a 2782:E 2738:T 2735:R 2728:a 2724:E 2714:e 2687:a 2683:E 2657:a 2654:E 2650:T 2646:a 2643:E 2616:β 2602:, 2598:] 2587:) 2581:T 2578:R 2572:a 2568:E 2562:( 2553:[ 2543:A 2540:= 2537:k 2519:T 2515:n 2509:n 2501:n 2484:. 2477:T 2474:R 2467:a 2463:E 2453:e 2447:n 2443:T 2439:A 2436:= 2433:k 2406:. 2401:P 2396:] 2390:) 2387:T 2383:/ 2379:1 2376:( 2368:k 2353:[ 2348:R 2337:a 2333:E 2322:T 2318:k 2314:R 2306:A 2302:a 2299:E 2295:T 2291:k 2284:T 2276:x 2262:, 2259:c 2256:+ 2253:x 2250:m 2247:= 2244:y 2222:. 2219:A 2210:+ 2206:) 2201:T 2198:1 2193:( 2187:R 2181:a 2177:E 2167:= 2164:k 2136:. 2131:T 2128:1 2121:R 2116:a 2112:E 2103:A 2094:= 2091:k 2069:. 2067:T 2063:k 2025:b 2021:A 1998:f 1994:A 1966:T 1963:R 1959:/ 1953:b 1949:E 1941:e 1935:b 1931:A 1927:= 1922:b 1918:k 1891:T 1888:R 1884:/ 1878:f 1874:E 1866:e 1860:f 1856:A 1852:= 1847:f 1843:k 1803:2 1799:T 1795:R 1789:b 1785:E 1779:= 1773:T 1770:d 1763:b 1759:k 1749:d 1704:2 1700:T 1696:R 1690:f 1686:E 1680:= 1674:T 1671:d 1664:f 1660:k 1650:d 1631:3 1625:2 1605:b 1601:E 1592:f 1588:E 1584:= 1579:0 1575:U 1549:b 1545:E 1522:f 1518:E 1502:) 1499:3 1496:( 1474:2 1470:T 1466:R 1460:b 1456:E 1450:+ 1442:= 1436:T 1433:d 1426:b 1422:k 1412:d 1389:) 1386:2 1383:( 1361:2 1357:T 1353:R 1347:f 1343:E 1337:+ 1329:= 1323:T 1320:d 1313:f 1309:k 1299:d 1261:2 1257:T 1253:R 1246:0 1242:U 1232:= 1226:T 1223:d 1216:b 1212:k 1202:d 1190:T 1187:d 1180:f 1176:k 1166:d 1150:1 1133:0 1128:e 1124:k 1092:b 1088:k 1073:f 1069:k 1059:= 1054:0 1049:e 1045:k 1012:b 1008:k 1002:f 998:k 992:= 987:0 982:e 978:k 953:b 949:k 926:f 922:k 889:0 885:U 866:) 864:1 862:( 840:2 836:T 832:R 825:0 821:U 811:= 805:T 802:d 795:0 790:e 786:k 776:d 746:0 741:e 737:k 716:T 686:a 682:E 657:T 654:R 647:a 643:E 633:e 595:T 592:R 585:a 581:E 571:e 536:T 533:R 526:a 522:E 512:e 501:A 497:k 482:s 478:A 471:T 466:B 463:k 454:R 437:a 434:E 427:. 420:B 417:k 410:T 407:B 404:k 395:a 392:E 374:, 367:T 362:B 358:k 350:a 346:E 336:e 332:A 329:= 326:k 314:. 308:R 297:a 294:E 276:A 272:, 266:T 256:k 239:, 232:T 229:R 222:a 218:E 208:e 204:A 201:= 198:k 176:A 172:k 158:T 155:R 147:a 143:E 126:. 124:T 120:k 106:T 103:R 95:a 91:E 20:)

Index

Arrhenius law
physical chemistry
reaction rates
Svante Arrhenius
Jacobus Henricus van 't Hoff
van 't Hoff equation
equilibrium constants
energy of activation
empirical relationship
Eyring equation


rate constant
absolute temperature
rate constant
absolute temperature
pre-exponential factor
§ Modified Arrhenius equation
activation energy
universal gas constant
activation energy
Boltzmann constant
mole
molecule
gas constant
Boltzmann constant
s
frequency
catalysts
diffusion

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