ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Determination of the excess thermodynamic functions of components of binary salt melts in infinitely diluted solution on the basis of the ideal associated solution model

G. Kaptay and E. Berecz

Department of Physical Chemistry, Institute of Chemistry, University of Miskolc, H-3515 Miskolc-Egyetemváros

Abstract: The authors pointed out that beside the heteronuclear associates, type A_IB_J, the homonuclear associates, types A_i and B_j, are also necessary for the adequate thermodynamic description of the molten salt systems. With any number of associates, types A_i, B_j, and A_IB_J, being considered, the explicit formulas for calculation of the partial molar excess thermodynamic functions extrapolated to the infinitely diluted solution for components A and B were obtained in the system A-B.The trial calculations have proved that it is necessary to consider the homonuclear associates, types A_i and B_j, not only from the theoretical point of view, but also that of the practice even if the stability of the heteronuclear associates, type A_IB_J, is much greater (with more orders of magnitude) than that of the homonuclear ones. The possible methods of determination of the model parameters have been also discussed.

Full paper in Portable Document Format: 452a145.pdf

Chemical Papers 45 (2) 145–158 (1991)