Journal of Pure and Applied Ultrasonics

K. Vijayalakshmi ¹, V. Lalitha ², R. Gandhimathi ³

Affiliations
1 Department of Physics, Cauvery College for Women, Tiruchirappalli, Tamil Nadu, IN
2 Department of Physics, Seethalakshmi Ramaswamy College, Tiruchirappalli, Tamil Nadu, IN
3 Deparrment of Physics, Urumu Dhanalakshmi College, Tiruchirappalli, Tamil Nadu, IN

Abstract

Ultrasonic velocities and derived thermodynamic parameters are of considerable interest in understanding the nature and strength of various intermodular interactions, formation of Hydrogen bonding etc In the present work adiabatic compressibility and enthalpies of binary liquid mixtures of n-alcohols with Lactic acid and Dioxane have been computed from the measured values of density, viscosity and ultrasonic velocity. The excess values of these parameters have been calculated to study the nature and strength of molecular interactions in liquid mixtures. The effect of electro negativity and induction reflected in the values of Alcohol-Dioxane systems have been detected.

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K. Vijayalakshmi ¹, V. Lalitha ², R. Gandhimathi ³

Affiliations
1 Department of Physics, Cauvery College for Women, Tiruchirappalli, Tamil Nadu, IN
2 Department of Physics, Seethalakshmi Ramaswamy College, Tiruchirappalli, Tamil Nadu, IN
3 Department of Physics, Urumu Dhanalakshmi College, Tiruchirappalli, Tamil Nadu, IN

Abstract

In the present work, measurement of ultrasonic velocity, density and viscosity of ternary liquid mixtures of Dioxane, n-alcohols and Lactic acid are made 10 ml specific gravity bottle and Kenon-Fenske viscometer respectively. From the measured values adiabatic compressibility and excess adiabatic compressibility values are computed to study the strengths of various intermolecular intermolecular interactions between the polar liquids and non polar solvent. Lactic acid-Dioxane system shows strong Hydrogen bonding effect. Mutual depolymerisation is predominant in ternary liquid mixtures.

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