VAPOR LIQUID EQUILIBRIUM OF MOLECULAR FLUID MIXTURES BY EQUATION OF STATE

The description and prediction of the vapor-liquid equilibrium of molecular fluid mixtures by equation of state is reviewed. Seven equations of state are compared with experimental data. Results of the comparison are reported for mixtures of non-polar and slightly polar substances over a wide image of pressure, temperature, and molecular variety. The experimental data base of the comparison includes 20 symmetric mixtures, 20 methane-containing mixtures, 17 hydrogen mixtures, 18 carbon dioxide mixtures, and 12 nitrogen mixtures. Interaction constants are determined and reported for all the mixtures studied.