Surface tension of non-ideal binary and ternary liquid mixtures at various temperatures and< i> p= 81.5 kPa

Experimental surfacetensions for binarymixtures (1,2-ethandiol + water), (1,2-ethandiol + acetonitrile), and (acetonitrile + water) at temperatures of 283.15 K, 298.15 K, and 308.15 K and the ternarymixture (1,2-ethandiol/water/acetonitrile) at 298.15 K have been measured with the Du Noüy ring tensiometer. The surfacetension of the above mentioned binary and ternary systems were correlated with empirical and thermodynamic based models. The methods of Pando et al. and Ku et al. were used to correlate the ternarysurfacetension data. The Fu et al., Kalies et al. and Wang et al. models were also applied to predict surfacetension in the ternary system. The mean average absolute deviations obtained from the comparison of experimental and calculated surfacetension values for ternary system with three models are less than 2.4%, which leads to concluding that these models show a good accuracy in different situations in comparison with other predictive equations.