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On the thermodynamics of concentrated strong electrolytes aqueous solutions the system NaNO 3 —NaCl—H 2 O
Author(s) -
Correa H. A.,
Vera J. H.
Publication year - 1975
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450530209
Subject(s) - thermodynamics , ternary operation , electrolyte , aqueous solution , gibbs free energy , ternary numeral system , chemistry , activity coefficient , binary number , strong electrolyte , saturation (graph theory) , physics , mathematics , electrode , computer science , programming language , arithmetic , combinatorics
A simple analytical function is proposed for the calculation of molar excess Gibbs energy of binary solutions of strong electrolytes in water. Empirical parameters can be easily determined from experimental data reported in the literature. The treatment is extended to ternary solutions and to solid liquid equilibria using an empirical equation. Absence of solid solutions is assumed. The correlations are applied to the common ion ternary system NaNO 3 ‐NaCl‐H 2 O in the temperature range from 0 to 100°C. Predictions of activity coefficients of the binary systems and saturation curves of the ternary system are in good agreement with experimental data.