Conductometric Study of Some Metal Halides in Glycerol + Water Mixtures |
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| Authors: | Mahendra Nath Roy Bhoj Bahadur Gurung Vikas Kumar Dakua |
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| Affiliation: | (1) Department of Chemistry, University of North Bengal, Darjeeling, 734013, India |
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| Abstract: | Electrolytic conductivities of potassium halides, KX (X = Cl−, Br−, I−) have been investigated in 10, 20, and 30 mass% glycerol + H2O mixtures at 298.0, 308.0, and 318.0 K. The conductance data have been analyzed by the Fuoss-conductance–concentration equation in terms of the limiting molar conductance (Λ0), the association constant (K
A
), and the distance of closest approach of ion (R). The association constant (K
A
) tends to increase in the order: 10 mass% < 20 mass% < 30 mass% glycerol + water mixtures, while it decreases with temperature. Thermodynamic parameters ΔH
0, ΔG
0, and ΔS
0 are obtained and discussed. Also, Walden products (Λ0η) are reported. The results have been interpreted in terms of ion–solvent interactions and structural changes in the mixed solvents. |
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| Keywords: | association constant density glycerol limiting conductance potassium bromide potassium chloride potassium iodide thermodynamic parameters Δ H 0 Δ G 0 and Δ S 0 Walden product |
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