Activities of PbCl₂ in the K⁺, Pb²⁺/Cl^-,SO₄^2- reciprocal molten salt system

Abstract

Activities of PbCl₂ in the molten system K₂SO₄+PbCl₂ have been measured at 1012 K by a transpiration vapour pressure method. Values of PbCl₂ activities are calculated from the conformal ionic solution model (CIS), the result being in reasonable agreement with experimentally measured values. Results obtained may therefore be summarized by the CIS equation A_PbCl₂ = x_pb(x_cl)²exp[0.2405/T)(X?_k)²{-3285-X?_pb(11564+2032(3X?_k-1))}] where Xi, X?_t are ion fractions and equivalent ion fractions respectively.