Abstract
The excess dielectric polarization and the dipolar excess heat of mixing for systems of propan-2-ol, butan-1-ol, 3 methyl butan-1-ol and phenyl carbinol + non-polar solvents like cyclohexane, carbon tetrachloride and benzene were studied by the measurements of refractive indices and dielectric constants in the entire composition range. The method of Haskell, based on the Onsager model was used for the calculation of dipolar excess thermodynamic functions. The information obtained regarding the dipole-dipole interactions is more direct than that obtained by calorimetric methods. The non-stoichiometric solute-solvent interactions are also found to contribute to the excess thermodynamic functions.
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