par Prigogine, Ilya ;Bellemans, André
Référence Discussions of the Faraday Society, 15, page (80-92)
Publication Publié, 1953
Article révisé par les pairs
Résumé : The cell model for solutions, used by one of the authors (I. P.) and his collaborators, is extended to mixtures of spherical molecules of slightly different radii. To take account of this difference, we introduce two characteristic distances aA and aB, which are the mean distances of the first neighbours of a molecule A and of a molecule B. These distances are fixed by a condition of minimum free energy. The thermodynamic excess functions for the solution (excess free energy, energy, entropy and volume) are expressed in terms of purely molecular data.