On thermodynamics of complesing of cadmium and lead(2) with thiorea in aqueous and aqueous-ethanol solutions

The thermochemical measurements of the interaction of ions of cadmium and lead (2) with thiourea have been conducted under the following conditions: temperature, 25 deg C; constant ionic forces of the solution equal to 0.1; 0.5; 1.0; 2.0 and 3.0 induced by lithium perchlorate or μ=0.1 (LiClO4); and ethanol concentrations of 10, 20, 40, 60 and 80% by mass. Using the stability constant value that has been determined previously under similar conditions the variations of the isobaric-isothermic potentials and of the enthalpies and the entropies of formation of thiourea complexes of cadmium and lead (2) have been calculated