The Conductance of Copper (II) Sulfate in Water at Various Temperatures

The present investigation was undertaken to obtain the thermodynamic properties of ion association reactions. The electrolytic conductances of copper(II) sulfate in water at the temperatures ranging from 5° to 45° C were measured in order to study the effect of temperature on ion association constants. The data were analyzed using Shedlovsky's method based on the Onsager's limiting law and ion association constants KA, equivalent coductances at infinite dilution ⊿ , were obtained. From the plot of logKA vs. 1/T over the whole temperature range following values obtained; ⊿H = 1.89 kcal deg-1 mol-1, ⊿G = -3.22 kcal deg-1 mol-1, ⊿S = 17.1 cal mol-1 at 25°C.Article信州大学理学部紀要 1(1): 31-37(1967)departmental bulletin pape