Activity coefficient measurements of the system HCl−ZnCl2−H2O at 25 and 35°C |
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| Authors: | Hanna Tialowska-Mocharla S Manohar Gordon Atkinson |
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| Institution: | (1) Veterans Administration, Medical Center, Indiana University, Indianapolis, IN;(2) Department of Chemistry, University of Oklahoma, 73019 Norman, OK |
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| Abstract: | Electromotive force measurements were carried out on the HCl–ZnCl2–H2O system at constant total ionic strengths of 0.1, 0.2, 0.5, 1.0 and 2.0 mol-kg–1 at 25 and 35°C using a cell consisting of Pt, H2(g, 1 atm)|HCl(mA), ZnCl2(mB)|AgCl/Ag. The data were interpreted by the mixed electrolyte equations of Pitzer and Kim in order to evaluate mixing ion-interaction parameters. The activity coefficients of ZnCl2 and the Gibbs excess free energies of mixing are calculated and presented at I=2.0 mol-kg–1 and compared with similar systems containing transition metal chlorides. |
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| Keywords: | Activity coefficients hydrochloric acid zinc chloride Pitzer equations excess free energies |
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