Solubility and solvation of alkali metal perchlorates, tetramethyl and tetraethylammonium in aqua-ketone solvents

The KClO4, RbClO4, CsClO4, (CH3)4NClO4, (C2H5)4NClO4 solubility in water and water-acetone, water-methylethylketone mixtures is determined through the method of isothermal saturation at 298.15 K. Dissociation constants of alkali metals perchlorates in acetone and its 90% mixtures (by volume) are determined conductometrically. Solubility products and standard energies of the Gibbs transfer of the studied electrolytes from water into water-acetone and water-methylethylketone solvents. It is established that the Gibbs standard energies of Na+, K+, Rb+ and Cs+ cations transfer from water to water-ketone solvents are close to each other. It is shown that the effect of acetone and methylethylketone on solvation of the studied electrolytes is practically similar