Collect. Czech. Chem. Commun. 1982, 47, 3188-3198

Liquid-vapour equilibrium and heats of mixing in the 1-propanol-acetonitrile system

Vladimír Dohnal, František Veselý and Jaroslav Vinš

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


Vapour-liquid equilibrium and heats of mixing were measured in the 1-propanol-acetonitrile system. The vapour-liquid equilibrium data measurements were carried out under isobaric conditions at the pressures 37.54, 56.44 and 86.05 kPa and isothermally at temperatures of 333.25 and 351.22 K. The heats of mixing were measured at temperatures of 298.15, 308.15 and 318.15 K. The individual vapour-liquid equilibrium data sets were correlated by various two-parameter equations, the data on heats of mixing by a Redlich-Kister polynomial. The extensive data obtained for both excess functions, covering the temperature range of 60 K, were correlated successfully by the Wilson equation with the energy parameters dependent quadratically on temperature.