Thermodynamics of Re-Solvation of Cadmium Ions in Water-Acetone Solvents

Abstract

On the basis of a method of differences of Volta-potentials at 298.15 K the real primary effect of an environment of cadmium ions and the real Gibbs energy for the transport of ë d 2+ out of water into a wateracetone solvent ( å 2 ëé ) are determined. The surface potential at the nonaqueous solvent/gas phase interface is obtained. This quantity is taken into account when calculating chemical thermodynamic characteristics for cadmium ions and the surface potential at the gas phase/acetone interface = -0.337 V. Thermodynamic characteristics of the over-solvation of a II-I electrolyte with those for a I-I electrolyte are compared. Key words : voltaic difference of potentials, primary effect of an environment, Gibbs energy for transport ∆χ H 2 O S ∆χ Me 2 O