Molten salts freezing point measurements in the AgNO₃-AgCl system

Abstract

Activities of silver nitrate in the AgNO₃-AgCl system were obtained through freezing point depressions. Activity coefficients were calculated assuming the melt consisted of only simple ions which mixed ideally and then assuming the chloride was totally in the form of the complex cation, Ag₂Cl⁺, which also mixed ideally. The second model proved more successful and was extended to include Ag⁺Cl^- entities in the melt. A formation constant of 12±2 was obtained for Ag₂Cl⁺ at 210°.