Excess molar volumes and viscosities of binary mixtures of 1,2-diethoxyethane with chloroalkanes at 298.15 K |
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Authors: | Amalendu Pal and Rakesh Kumar Bhardwaj |
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Institution: | (1) Department of Chemistry, Kurukshetra University, 136 119 Kurukshetra, India;(2) Department of Chemistry, Dyal Singh College, 132 001 Karnal, India |
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Abstract: | Excess molar volumes (V
m
E
) and viscosities (η) of the binary mixtures of 1,2-diethoxyethane with di-, tri- and tetrachloromethane have been measured
at 298-15 K and atmospheric pressure over the entire mole fraction range. The deviations in viscosities (δlnη) and excess
energies of activation (δG*E) for viscous flow have been calculated from the experimental data. The Prigogine-Flory-Patterson (PFP) model has been used
to calculateV
m
E
, and the results have been compared with experimental data. The Bloomfield and Dewan model has been used to calculate viscosity
coefficients and these have also been compared with experimental data for the three mixtures. The results have been discussed
in terms of dipole-dipole interactions between 1,2-diethoxyethane and chloroalkanes and their magnitudes decreasing with the
dipole character of the molecules. A short comparative study with results for mixtures with polyethers and chloroalkanes is
also described. |
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Keywords: | Excess volumes viscosity deviations binary mixtures 1 2-diethoxy-ethane chloroalkanes |
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