Abstract

A vapour pressure equation for electrolyte solutions recently proposed by the authors has been applied to the prediction of the vapour pressure of aqueous and non-aqueous, single-and mixed-electrolyte solutions. The correlation requires as input a single "K" value for each salt and five parameters for each solvent. K values for 111 electrolytes and solvent parameters for six solvents are reported. The K parameters can be approximated well by assigning two parameters to each ion. This correlation has been examined for 176 systems (4157 experimental points). It gives accurate results up to 44 mol kg-1 of ionic strength.