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Abstract
Standard thermodynamic parameters characterizing the resolvation of the Cu2+ ions and the surface potential at the gas-phase/acetone interface, ΔχMe2CO, are determined on the basis of the results of measuring compensating voltages of the Volta circuits by the Kenrick method at 298.15 K and the value of the surface potential at the nonaqueous-solvent/gas phase interface, ΔχH2OS, which was obtained earlier. A comparison of thermodynamic parameters characterizing the resolvation of the copper ions with similar quantities for the calcium and cadmium ions is performed. Specific features pertaining to the solvation of copper ions in a mixed water-acetone solvent are elucidated and the effect of the composition and nature of the mixed solvent on the quantities obtained is determined. A dependence of variations in the thermodynamic parameters characterizing the resolvation of cations on their charge and crystallographic radius is established. The dependence corresponds to the series K+, Ca2+, Cd2+, Cu2+.
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