Volumetric and Ultrasonic Study of Mixtures of Benzyl Alcohol with 1-Propanol, 2-Propanol, and 1,2-Propandiol, 1,3-Propandiol and T-butanol

Abstract

Densities and speeds of sound for five binary mixtures of benzylalcohol with 1,3-propandiol, 1-propanol, 2propanol, 1,2-propandiol and phenylethnol were measured over the entire range of composition and at five temperatures from 298.15K to 323.15K at 5K interval and atmospheric pressure using a vibrating u-tube densimeter (DSA 5000). Besides, the densities for pure compounds in the above-mentioned temperature range were measured. The experimental densities were used to calculate the excess molar volumes, isentropic compressibility changes, the excess thermal expansion coefficients, and the excess partial molar volumes at infinite dilution, The results have been used to discuss the nature and strength of intermolecular interactions in these mixtures. The calculated excess and deviations quantities are correlated with the third-order Redlich-Kister equation. As a final work we modeled the experiment results by using TM and PR EOSs. This is clear that the results with TM EOS are more acceptable than PR EOS. TM and PR EOS can successfully predict density and excess molar volume. And are unable to predict speed of sound.

Ultrasonic Studies in the Binary Mixtures of O-Chlorophenol with Salicylates at Different Temperatures

“…Ultrasonic velocities have been adequately employed in understanding the nature of molecular interaction in pure liquids and binary mixtures 3,4 . The method of studying the molecular interaction from the knowledge of the variation of thermodynamic parameters and their excess values with composition gives an insight into the molecular process 5,6 . The present paper is part of our research work on the thermodynamic properties of liquid-liquid mixtures [7][8][9] .…”