Electrical conductivity of concentrated aqueous solutions of divalent metal sulfates

The electrical conductivities of aqueous solutions of cobalt sulfate, copper sulfate, cadmium sulfate, manganese sulfate, nickel sulfate, and zinc sulfate have been measured as a function of concentration, m = (0.005 to 2.5) mol center dot kg(-1), and temperature, T = (278.15 to 308.15) K. Densities were measured for all electrolyte solutions at 298.15 K, and the molar conductivities are reported. The conductivity data were analyzed by the empirical Casteel-Amis equation.