Abstract
For the first time two-body interaction coefficients between any two molecules are considered to be non-identical. On this basis, various expressions involved in Flory theory have been deduced, and then utilized to compute surface tension of three ternary liquid mixtures. Prior to this, corresponding-states group-contributions method for the first time has been extended to three ternary liquid mixtures, viz. n-pentane + n-hexane + benzene, cyclohexane + n-heptane + toluene, 2,2,4-trimethyl pentane + cyclohexane + decane and some binary mixtures at 298.15 K. On comparing the computed values of surface tension by the present two approaches with experimental data, quite satisfactory results have been observed.
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