Viscosity, Conductivity and Density of Fused Silver and Copper(I) Chlorides Doped with Group I and II Chlorides in the Mole Fraction Region 0 ≦ xdopant ≦ 0.1

Abstract

The density, the electrolytic conductivity and the viscosity of molten silver chloride doped with NaCl, RbCl, MgCl2, CaCl2, SrCl2 and CdCl2, and of molten copper chloride doped with NaCl, KC1, CsCl, MgCl2, CaCl2 and BaCl2 have been measured in the concentration range 0 ≦ xdopant ≦ 0.1: the temperature range was 740 K ≦ T ≦ 900 K for silver chloride and 710 K ^ T ^ 850 K for copper chloride. The findings show that the molar conductance in such systems is strongly dependent on the ionic radii o f the cations: the viscosity, on the other hand, is mainly governed by their charge. A strong correlation exists between the formal activation energies o f conductance and viscosity, Ea η/Ea Λ being constant for all types and concentrations of dopant used in this work.