par Steinchen, Annie
Référence Bulletin des Sociétés chimiques belges, 79, 1-2, page (15-23)
Publication Publié, 1970
Article révisé par les pairs
Résumé : In the present paper, we discuss the fundamental problem of the choice of the thermodynamic variables. In the systems consisting in uniform phases, the Gibbs‐phase rule permits one to define the number of variables at equilibrium. In non uniform systems, the problem is more complicated. A multilayer model allows to describe the orientation effects in systems by means of new variables as the dipole moments. The charged and polarized double layers may be usefully treated by the local thermodynamics method. The balance equations show that an electric variable as the polarization is to be taken into account. In the layers where there is specific adsorption, the usual local variables are unnable to describe the local state of the matter. The thermodynamic quantities of each volume element of the layer are functionals of the concentrations. Copyright © 1970 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim