Thermodynamics of mixed electrolyte solutions. XI. An isopiestic study of the quaternary system NaCl?KCl?CaCl2?H2O at 25°C |
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| Authors: | D Saad J Padova Y Marcus |
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| Institution: | (1) Soreq Nuclear Research Centre, Yavne, Israel;(2) Institute of Chemistry, Hebrew University, Jerusalem, Israel |
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| Abstract: | Osmotic and activity coefficients in the aqueous quaternary system sodium chloride-potassium chloride-calcium chloride were derived from isopiestic measurements at 25°C. The isopiestic data were treated by the various procedures of Scatchard, Friedman, and Reilly, Wood, and Robinson. The results obtained showed good agreement with those obtained by pseudo-ternary transforms. Interaction parameters obtained indicated the preponderance of pairwise interactions. Excess Gibbs free energies of mixing were calculated. |
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| Keywords: | Activity coefficients osmotic coefficients interaction parameters excess Gibbs free energy of mixing NaCl:KCl:CaCl2 |
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