Collect. Czech. Chem. Commun. 1986, 51, 2665-2674

Vapour-liquid equilibrium in the benzene(1)-propionic acid(2)-acetic acid(3) ternary system

Ivona Malijevská, Helena Perničková, Karel Ledvinka and Bohuslav Doležal

Department of Physical Chemistry, Prague Institute of Chemical Technology, 166 28 Prague 6


Results of measurement of vapour-liquid equilibria in the benzene-propionic acid-acetic acid ternary system at normal pressure are presented. The activity coefficients were, within the framework of inaccuracies determined on the basis of the law of error propagation, subjected to a test of consistency and correlated by the Wilson equation. The experimental values of activity coefficients are compared with the values calculated on the basis of the Wilson equation with its constants obtained both from the ternary and from the binary data and with the values estimated by the UNIFAC method.