Ionic Conductivity of Selected 2:1 Electrolytes in Dilute Solutions of Mixed Aqueous–Organic Solvents at 298.15 K.

Equivalent conductivities of dilute solutions of calcium nitrate, cadmium nitrate, zinc nitrate, and calcium chloride ( c< 0.0021 eq·dm −3) were measured in binary aqueous mixtures containing up to 70 wt % cosolvent (methanol, ethanol, and acetone) at 298.15 K ± 0.1. Data were treated by the Fuoss−Edelson equation, and its parameters, the limiting equivalent conductivity, Λ 0, and the primary association constants, K1A, were evaluated. Variations in Walden products and K1Awere interpreted in terms of ionic properties as well as solvent structure and dielectric constant. [ABSTRACT FROM AUTHOR]