Excess sound velocity and deviation in viscosity of some binary liquid mixtures containing 1,3-dioxolane with alkanols (c5-c10) at 298.15k

The ultrasonic velocity studies in liquid mixtures are wonderful use in understanding the nature and strength of intermolecular interaction. The excess sound velocity (uE), excess molar volume (VmE), and excess viscosity (ηE) have been investigated from sound velocity(u), density (ρ) and viscosity (η) measurements of six binary liquid mixtures of 1, 3-dioxolane with pentanol. Hexanol, heptanol, octanol, nonanol and decanol over the entire range of mole fraction at 298.15K. The present paper represents the nonlinear variation of ultrasonic velocity lead to dipole –dipole interactions between unlike molecules through hydrogen bonding and positive values indicate that the effect due to breaking up of self-associated structures of the components of the mixtures is dominant over the effect of H-bonding and dipole-dipole interaction between unlike molecules. The deviation has been fitted by a Redlich-Kister polynomial equation and the results are discussed in terms of molecular interactions. The excess properties are found to be eighter negative or positive depending on the molecular interactions and nature of the liquid mixtures. Excess properties provide important information in understanding the solute-solvent interaction in a solution.