Solubility of nickel chloride in molten sodium tetrachloroaluminate saturated with sodium chloride over the temperature range 200–400 °C

Abstract

Interesting thermodynamic data have been obtained from experiments in molten sodium tetrachloroaluminate. The solubility of NiCl₂ in chlorobasic (NaCl-saturated) NaAlCl₄ has been studied over the temperature range 200–400 °C, leading to the result that the apparent standard enthalpy change for the dissolution of NiCl₂ in this system is independent of temperature over this range. This is normally only the case in simple solvents and/or where free ions are formed. A model is presented which accounts for the observations.