Tk. Varadarajan et al., ION SOLVATION OF SOME COPPER(II) SALTS IN WATER PLUS N-METHYL-2-PYRROLIDINONE SOLVENT MIXTURES AT 30-DEGREES-C, Journal of chemical and engineering data, 42(3), 1997, pp. 453-457
The preferential solvation of copper(II) iodate, benzoate, formate, sa
licylate, p-methylbenzoate, and p-nitrobenzoate has been studied in wa
ter+N-methyl-2-pyrrolidinone mixtures at 30 degrees C by Gibbs energie
s of transfer and solvent transport number measurements. The Gibbs tra
nsfer energies of the salts were split into their ionic values using t
he transfer energies of copper ion determined on the basis of the negl
igible liquid junction potential method. These results were also compa
red with those obtained on the basis of the tetraphenylarsonium tetrap
henylborate method. These results have been interpreted in terms of he
teroselective solvation of all the salts with the copper ion being sel
ectively solvated by N-methyl-2-pyrrolidinone and anions by water.