Gibbs, J. Willard

Gibbs energy of activation - energy that must be added to that already possessed by a molecule(s) in order to initiate a reaction.

Gibbs theorem - substances that lower the surface tension of the pure dispersion medium tend to collect in its surface, whereas substances that raise the surface tension tend to remain out of the surface film.

Gibbs-Donnan equilibrium - Synonym(s): Donnan equilibrium

Gibbs-Helmholtz equation - an equation expressing the relationship in a galvanic cell between the chemical energy transformed and the maximal electromotive force obtainable. Synonym(s): Helmholtz-Gibbs theory

Helmholtz-Gibbs theory - Synonym(s): Gibbs-Helmholtz equation