Hard sphere expansion conformal solution theory with the Lennard–Jones (12-6) intermolecular potential

Modification of the hard sphere expansion conformal solution theory is presented concerning polarity of molecules, the Lennard–Jones (12-6) parameters, and mixing rules for unlike parameters. The theory was used for prediction of vapour–liquid equilibrium at constant temperature in binary, ternary and quaternary mixtures consisting of chlorobutanes and C7 hydrocarbons. Excess molar volumes for binary systems are calculated, too.