Isobaric Vapor-Liquid Equilibria for Binary Systems with Limited Miscibility, Water-n-Amyl Alcohol and Water-Isoamyl Alcohol

Abstract

Recently, we proposed a method for measuring isobaric vapor-liquid equilibrium for binary systems with limited miscibility. The method involves the determination of the dew-point isobar by means of a vapor mixing method and the bubble-point isobar by means of an ebulliometric method. In the present work, this method was applied to measure the vapor-liquid equilibrium data for the binary systems water-n-amyl alcohol and water-isoamyl alcohol at 101.325 kPa. The experimental vapor-liquid equilibrium data were checked for thermodynamic consistency by means of the rigorous equation proposed in the earlier paper. The enthalpies of mixing data necessary for the consistency test, which were measured at 298.15 K, and the vapor pressure data of isoamyl alcohol were reported together.