Effect of the energy of zero vibrations and the entropy of reagents on the kinetic isotopic effect of the hydrogen evolution reaction

Autor: L. I. Krishtalik
Rok vydání: 2000
Předmět:
Zdroj: Russian Journal of Electrochemistry. 36:799-801
ISSN: 1608-3342
1023-1935
DOI: 10.1007/bf02757685
Popis: The effect the difference in zero energies and entropies of isotopic forms of reagents has on the difference in free energies of the elementary act of discharge of a hydronium ion for an initial equilibrium configuration of a reaction complex and equilibrium (ground) energy levels is considered. The analysis is performed for conditions of constancy of potential and constancy of overvoltage: only in the latter case one does not have to resort to extrathermodynamic assumptions. It is shown that differences in entropies of isotopic forms play a substantial role
Databáze: OpenAIRE