The Electrical Conductivity and Density of the Molten Systems Li2S04 —ZnSO₄ and Na₂SO₄ —ZnSO₄

Abstract

Zinc sulphate decomposes upon melting. Molten Li 2 SO 4 -ZnSO 4 and Na 2 SO 4 -ZnSO 4 are thermally stable with up to 80 mole% of ZnSO 4 . We have measured the density and electrical conductivity of these melts. By extrapolation we have calculated the density (ϱ) and molar electrical conductivity (Λ) of pure molten zinc sulphate and we have obtained (t in °C) ϱZnSO 4 = 3.463 - 0.470 x 10 -3 t (g/cm 3 ), ΛZnSO 4 = 0.0950 t-35.4 (cm 2 /ohm, mole).