Ion-solvent interaction: Viscosity and apparent molar volume of univalent electrolytes in dioxane-water mixtures at different temperatures

The viscosity and apparent molar volume of NaCl, NaBr, NaNO₃, KCl, KBr and KNO₃, at mass fractions of dioxane of 10, 20 and 30%, have been studied at 30, 35, 40 and 45°C. The values of the A and B coefficients of the viscosity equation indicate ion-ion and ion-solvent interactions. The limiting apparent molar volume (φ°) and limiting slope (S_v) is found to be different for different salts at different solvent compositions and has also been interpreted in terms of ion-ion and ion-solvent interaction.