MOLAR EXCESS GIBBS FREE-ENERGY OF 1-PROPANOL OR 2-PROPANOL PLUS AROMATIC-HYDROCARBONS AT 298.15-K IN TERMS OF AN ASSOCIATION MODEL WITH A FLORY CONTRIBUTION TERM

Molar excess Gibbs free energy of mixing values for 1-propanol or 2-pr opanol + benzene, toluene, o- m- or p-xylene at 298.15 K have been cal culated by the Barker method from vapour pressure data measured by a s tatic method. The free energies of mixing for these binary systems are also predicted in terms of the Mecke-Kempter type of association mode l with a Flory contribution term using two interaction parameters. The predicted values agree reasonably well with the experimental values.