Hetero-Molecular Interactions in Polar-Nonpolar Binary Mixture of Different Compositions and Studies on their Thermodynamic Properties

The thermodynamic properties of binary liquid mixture of 2-Bu-OH and Cumene (isopropylbenzene) have been determined at different temperatures (298.15-323.15) K by 5 K intervals over the whole composition range. The data have been utilized to estimate the excess thermodynamic properties (excess enthalpy, excess entropy, excess free energy). The result of excess properties viz: excess enthalpy of activation (  H #E ), excess entropy of activation (  S #E ) and excess free energy of activation (  G #E ) were fitted to the Redlich-Kister equation and plotted by graphical presentation. The excess values have been found to be useful in estimating the type and strength of the interactions between the polar-nonpolar binary mixture.