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

Influence of a complex compound on the thermodynamic activity of components in a binary ionic system

M. Malinovský, J. Vrbenská, and I. Koštenská

Department of Inorganic Technology, Slovak Technical University, 812 37 Bratislava

Abstract: The influence of a complex compound Z having nonzero degree of thermal dissociation on the thermodynamic activity of component A in a binary system A—Z is analyzed. It is assumed that no solid solutions are formed in the system. It is shown that if the component A is identical with some of the products of thermal dissociation of the compound Z then its activity coefficient formally increases. This statement holds also reversely. These phenomena are caused by that the real concentration of component A in solution differs from the "weighed-in" amount of A. Therefore if the activity coefficient of component A should reflect only the character of its interaction with other substances in solution, the influence of described concentration changes is to be eliminated.

Full paper in Portable Document Format: 365a605.pdf

Chemical Papers 36 (5) 605–610 (1982)