intrinsic activation energy, \(E_{\text{a,i}}\)

https://doi.org/10.1351/goldbook.I03134
If \(E_{\text{a,1}}\) and \(E_{\text{a,- 1}}\) are the @A00102@ for a reaction in forward and reverse directions, the lesser of the two is sometimes called the intrinsic @A00093@ energy. It is the @A00093@ energy for the reaction in the exothermic direction.
Source:
PAC, 1996, 68, 149. (A glossary of terms used in chemical kinetics, including reaction dynamics (IUPAC Recommendations 1996)) on page 170 [Terms] [Paper]
Cite as: IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997). Online version (2019-) created by S. J. Chalk. ISBN 0-9678550-9-8. https://doi.org/10.1351/goldbook.
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Last revised: February 24, 2014