VAPOR-LIQUID-EQUILIBRIA IN STRONG ELECTROLYTE-SOLUTIONS BY THE CORGC EQUATION OF STATE

The capability of chain-of-rotator group contribution equation of stat e (CORGC EOS) in prediction of vapour-liquid equilibria for electrolyt e solutions is discussed. Anew approach is considered in which salt is considered as a single component and therefore, there is no ion in th e solution. The interaction parameters between water and 50 salts are determined and reported. The parameters are temperature dependent and thus, vapour-liquid equilibria calculations can be achieved at moderat e temperature. The percent average absolute deviation for prediction o f vapour pressure and osmotic coefficient for 50 aqueous solutions are equal to 0.89 and 16.7, respectively. Comparison between the calculat ed results and experimental data has been performed.