Thermodynamic properties of ions in solutions of sodium and potassium chlorides in H2O-DMSO and D2O-DMSO mixtures of 278-323 K

Thermodynamic characteristics of sodium and potassium chlorides ion solvation in mixtures of water and heavy water with dimethylsulfoxide have been obtained from data on temperature dependence of the standard e.m.f. of circuits without transfer. Regularities in their change depending on cation nature, temperature and composition of mixed solvent have been considered. Isotope effect in the Gibbs free energy of ΣNa+, Cl- and ΣK+, Cl- solvation has been calculated. 20 refs.; 3 figs.; 2 tabs