Journal
PHYSICA B-CONDENSED MATTER
Volume 406, Issue 4, Pages 854-858Publisher
ELSEVIER
DOI: 10.1016/j.physb.2010.12.013
Keywords
Density; Viscosity; Excess molar volume; Excess Gibb's free energy; Redlich-Kister type polynomial; Molecular interactions
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Funding
- U.G.C, New Delhi, India
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Densities and viscosities of mixtures of isopropanol, isobutanol and isoamylalcohol with equimolar mixture of ethanol and N,N-dimethylacetamide have been measured at 308.15 K over the entire composition range. Deviations in viscosity, excess molar volume and excess Gibbs free energy of activation of viscous flow have been calculated from the experimental values of densities and viscosities. Excess properties have been fitted to the Redlich-Kister type polynomial equation and the corresponding standard deviations have been calculated. The experimental data of viscosity have been used to test the applicability of empirical relations of Grunberg-Nissan, Hind-McLaughlin, Katti-Chaudhary and Heric-Brewer for the systems studied. Molecular interactions in the liquid mixtures have been investigated in the light of variation of deviation and of excess values in evaluated properties. (C) 2010 Elsevier B.V. All rights reserved.
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