Vapour-liquid equilibria in the systems carbon tetrachloride-toluene and n-pentane-benzene.

Abstract

A modified recirculation Dvorak and Boublik still was used in the equilibrium determination. The vapour-liquid equilibria in the systems carbon tetrachloride-toluene were studied at five isothermal conditions. Liquid activity coefficients were evaluated. The values of gamma were close to unity. The vapour-liquid equilibria in the systems n-pentane-benzene were studied at four isothermal conditions. Liquid activity coefficients were also evaluated. Liquid-vapour equilibria at isobaric conditions were correlated using the data of heat of mixing at 25°C and the experimental ln gamma values obtained from this work. The In gamma values were correlated by means of the three-constant Redlich-Kister equation for the binary systems.