DISSOCIATION MODEL OF THE ELECTRICAL-CONDUCTIVITY OF MOLTEN-SALT MIXTURES .5. SYSTEMS CONTAINING TRIVALENT CATIONS

The dissociation model of the electrical conductivity of molten salt mixtures, based on the assumption of an incomplete dissociation of electrolyte components was applied in some pseudobinary systems containing trivalent cations. The MeX-AlX3 (Me = Li, Na, K; X = Cl, F) and Na3AlF6-NaCl systems were chosen. It was found that the dissociation model may be successfully used in the systems containing trivalent cations if the real equilibrium composition is taken into account. In such a way the positive deviations from the additivity of the molar conductivity may be rationally explained.