ISSN: 2249–9504
CAS CODEN: IJPCDX

ACOUSTICAL AND THERMODYNAMICAL STUDIES OF MOLECULARINTERACTIONS IN AQUEOUS ETHYLENE GLYCOL AT 303.15, 308.15AND313.15K

Abstract

Author(s): S. Thirumaran1*, Gene George2, S.Vijay2 andN.Prakash1

The ultrasonic velocity, density and viscosity have been measured for the ternary liquid mixtures of (i) water + ethylene glycol + Tetrahydrofuran (THF), (ii) water + ethylene glycol + dimethyl formamide (DMF), and (iii) water + ethylene glycol + dimethyl sulphoxide (DMSO) have been measured as a function of the composition of 303.15, 308.15 and 313.15K.The fixed binary solvent mixture (water + ethylene glycol) has been prepared under the constant ratio of 4:1 respectively. The experimental data have been used to calculate some excess parameters namely,adiabatic compressibility (?E), intermolecular free length (Lf E), free volume(VfE), internalpressure(?i E), viscosity (?E) and Gibb’s free energy (?G*E). The results are discussed and interpreted in terms of structural and specific interactions that predominated by hydrogen bonding.

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