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.