THERMODYNAMICS OF MIXTURES CONTAINING LINEAR MONOCARBOXYLIC ACIDS .1. DISQUAC PREDICTIONS ON MOLAR EXCESS GIBBS ENERGIES, MOLAR EXCESS-ENTHALPIES AND SOLID-LIQUID EQUILIBRIA FOR MIXTURES OF LINEAR MONOCARBOXYLIC ACIDS WITH ORGANIC-SOLVENTS

Mixtures of linear monocarboxylic acids and n-alkanes, cyclohexane, benzene or tetrachloromethane are studied in the framework of DISQUAC. The model gives a fairly good representation of the molar excess Gibbs energy G(E), and of solid liquid equilibria. Larger differences from experimental data are found when predicting the molar excess enthalpy H(E); these are probably due to errors in the measured data. A method to improve DISQUAC results by fitting geometrical parameters of the ethanoic acid is also described briefly.