LIQUID-VAPOR-EQUILIBRIUM IN ELECTROLYTE S YSTEMS .1. DISSOLVED SALT EFFECT UPON THE LIQUID-VAPOR-EQUILIBRIUM

The salts dissolved in a single solvent or a mixed solvent are capable of altering the vapour pressure and the relative volatilities, respec tively. Theory and practice showed that the salt effect on the vapou-l iquid equilibrium can be large in certain systems, providing a potenti al technique of extractive distillation for systems difficult or impos sible to separate by normal rectification. A survey of the literature pertaining to salt effect in vapour-liquid equilibrium is reviewed.