Thermodynamic Properties of Aqueous Potassium Sulfate under Superambient Conditions |
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| Authors: | Bijan Das Kenneth S Pitzer |
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| Institution: | (1) Lawrence Berkeley National Laboratory and Department of Chemistry, University of California, Berkeley, California, 94720;(2) Department of Chemistry, North Bengal University, Darjeeling, 734 430, India |
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| Abstract: | Using the ion-interaction or virial coefficient approach developed by Pitzer, the pressure dependencies of the osmotic and activity coefficients for K2SO4(aq) up to 225°C and 0.65 mol-kg–1 have been calculated from recent literature data on the apparent molar volumes of K2SO4(aq). These pressure dependencies were combined with the osmotic and activity coefficients at 1 bar or P
sat, obtained from the model of Holmes and Mesmer to yield a comprehensive set of thermodynamic properties of K2SO4(aq) at temperatures from 25 to 225°C, pressures 100, 200, and 300 bars, and molalities to 0.65 mol-kg–1.On leave from the |
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| Keywords: | Pressure dependence of thermodynamic properties activity coefficients osmotic coefficients apparent molar volume ion association electrolytes potassium sulfate |
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