Response reactions

The theory of response reactions (RERs) was elaborated for systems in which several physico-chemical processes run simultaneously in mutual interaction, with local thermodynamic equilibrium, and in which state variables called extents of reaction are allowed, but thermodynamic equilibrium proper is not required.

The theory derives the sensitivity coefficient as the sum of the contributions of individual RERs.

Thus phenomena which are in contradiction to over-general statements of the Le Chatelier principle can be interpreted.

[2] RERs could be derived based either on the species,[3] or on the stoichiometrically independent reactions of a parallel system.

In the case of three-component systems, RERs can be visualized on a triangle diagram.