Abstract
(Vapour + liquid) equilibria (VLE) data of (1-butanol + benzene, or toluene, or o-, or m-, or p-xylene) measured by the static method at T=(308.15 ± 0.01) K over the entire composition range are reported. The excess molar Gibbs free energies of mixing G E m for these binary systems have been calculated from total vapour pressure data using Barker's method. The G E m for these binary systems are also analyzed in terms of the Mecke–Kempter type of association model with a Flory contribution term using two interaction parameters and it has been found that this model describes well the G E m values of these binary systems.
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