Vapor-Liquid Equilibrium of Diethylamine-Water System. II

The Effect of Sodium Hydroxide on the Vapor-Liquid Equilibrium

Abstract

The effect of the addition of sodium hydroxide on the vapor-liquid equilibrium of diethylamine-water system was examined. Addition of sodium hydroxide to the diethylamine-water system results in the increase of partial pressure of diethylamine in the vapor phase and decrease of partial pressure of water. It was found that addition of sodium hydroxide increases the difference in the volatility of diethylamine and water, and increases distillation effect, this effect being greater, the greater the concentration of sodium hydroxide. The temperature-composition curves, x-y equilibrium diagram, and relative volatility curves were indicated.