Some physical properties of binary liquid systems: (Ethanoic acid or propanoic acid or butanoic acid plus ethanenitrile)

Density, viscosity and surface tension of three binary liquid systems:ethanoic acid + ethanenitrile, propanoic acid + ethanenitrile, butanoic acid + ethanenitrile have been determined at 25, 35 and 45 degrees C, over the whole compositional range. The excess values of molar volume, viscosity, Gibbs free energy for the activation of dow and surface tension were evaluated. The excess values were fitted to a Redlich-Kister type of equation. The Grunberg-Nissan parameter, d, was also calculated. The binary viscosity data were fitted to the models of McAllister, Heric, Auslander and Teja and Rice. Surface tension data were fitted to the models of Zihao and Jufu, Rice and Teja, and an empirical two-constant model proposed in this study.