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The ultrasonic velocity, density and viscosity values of liquid mixture of aqueous polyvinyl pyrrolidone with aqueous zinc sulphate, manganese sulphate, zinc chloride and manganese chloride have been studied at 303.15 K, 308.15 K and 313.15 K. Relative association, surface tension, modified surface tension, adiabatic compressibility, acoustic impedance, intermolecular free length relaxation time and the nonlinearity parameter have been determined for various compositions. The variation observed in the results suggest that the presence of strong polymer-solvent interactions.

Ultrasonic speed, density and viscosity of binary liquid mixtures of aqueous ammonium per sulphate with other sulphate solutions at 303.15 K have been measured. From these experimental data, the adiabatic compressibility, intermolecular free length, internal pressure, acoustic impedance, relaxation time, molar volume, classical absorption coefficient and surface tension have been computed. The excess viscosity, excess compressibility, excess intermolecular free length, excess acoustic impedance and excess molar volume values are evaluated to find the nature and the extent of the interactions between the constituent molecules of the liquid mixture systems

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The volumetric and transport properties of ternary mixtures containing methyl benzoate + cyclohexane + hexanol have been investigated from the ultrasonic velocity (U), density (ρ), viscosity (η) measurements at 303, 308 and 313 K. From the experimental data, adiabatic compressibility (β), free length (LF), free volume (VF)), internal pressure (πi), have been calculated. In addition to that the excess values of above parameters are also evaluated. The excess properties have been used to discuss the presence of significant interactions between the component molecules in the ternary mixtures.