Wednesday, 29 July 2015

Gibbs free energy=potential free energy? (Transition state theory)


Online I found the plot Gibbs free energy vs. reaction coordinate:


https://en.wikipedia.org/wiki/Transition_state_theory


and on many books I found the plot potential energy vs. reaction coordinate (e.g. page 237 Atkins, Physical Chemistry for the Life Sciences, 2nd Ed).


In the first case activation energy is defined as $\Delta G$, whereas in the second case is defined as difference of potential energy.


Thus is the Gibbs free energy a potential energy?


Thank you very much.





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