Collect. Czech. Chem. Commun.
1989, 54, 2840-2847
https://doi.org/10.1135/cccc19892840
Vapour-liquid equilibrium in the ternary system cyclohexane-acetic acid-propionic acid
Ivona Malijevská, Alena Maštalková and Marie Sýsová
Department of Physical Chemistry Prague Institute of Chemical Technology, 166 28 Prague 6
Abstract
Isobaric equilibrium data (P = 101.3 kPa) for the system cyclohexane-acetic acid-propionic acid have been measured by two different analytical techniques. Activity coefficients calculated by simultaneous solving of equations for the chemical and phase equilibria were subjected to a consistency test based on inaccuracies determined from the error propagation law, and were correlated by Wilson’s equation. The activity coefficients measured were compared with those calculated from binary vapour-liquid equilibrium data and with values predicted by the UNIFAC method.
