THERMODYNAMICS OF FORMATION OF DOUBLE SALTS IN THE SYSTEMS CSCL-MCL(2)-H2O WHERE M DENOTES MN, CO, OR CU

The thermodynamic functions needed for plotting of the theoretical sol ubility isotherms of the systems CsCl-M'Cl-2-H2O (where M' is Mn, Co o r Cu) are calculated using Fitter's model. The results obtained are in good agreement with the experimental data, which allows drawing concl usions on the applicability of the thermodynamic method chosen for a s ufficiently exact description of the properties of the ternary solutio ns investigated. The standard molar Gibbs energies of reaction, Delta( r)G(m)(o), of the synthesis of the double salts, crystallizing in the systems from simple salts, and their standard molar Gibbs free energie s of formation, Delta(f)G(m)(o), are determined.