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The stability constants of Cu(SCN)~+ in the titled system have been determined by spectro-photometric measurements at 25℃ for 0, 5, 10, 15, 20 and 25 wt% of ethyl alcohol in mixed solvents.The total ionic strength of the solution are 0.2-2.0 mol·dm~(-3) and pH 1.5-1.6. On basis ofPitzer’s theory, a method of determining thermodynamic stability constants of coordination com-pounds in mixed solvents by curve fitting technique have been proposed. The stability constantsof Cu(SCN)~+ in mixed solvents have been correlated with composition and dielectric constant of thesolvent mixture.
The stability constants of Cu (SCN) ~ + in the titled system have been determined by spectro-photometric measurements at 25 ° C for 0, 5, 10, 15, 20 and 25 wt% ethyl alcohol in mixed solvents.The total ionic strength of the solution are 0.2-2.0 mol · dm -3 and pH 1.5-1.6 On basis of Pitzer’s theory, a method of determining thermodynamic stability constants of coordinated com-pounds in mixed solvents by curve fitting technique have been proposed. The stability constants of Cu (SCN) ~ + in mixed solvents have been correlated with composition and dielectric constant of the solvent mixture.