Conductivity of unsymmetrical and mixed electrolytes. Dilute aqueous cadmium chloride and barium chloride–hydrochloric acid mixtures at 298.15 K

Abstract

This paper presents conductivity measurements at 298.15 K for two aqueous systems containing three ionic species: barium chloride–hydrochloric acid mixtures and dilute cadmium chloride. The results have been analysed in terms of the Lee and Wheaton conductivity equation. Although it is an improvement on earlier approaches to the conductivity of electrolyte mixtures, the equation is found to be less satisfactory for mixtures than for pure electrolytes. The formation constants resulting from the analysis of cadmium chloride solutions are shown to be sensitive to the inclusion or otherwise of certain disputed terms in the Lee and Wheaton equation.