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Thermodynamic Properties of Aqueous Potassium Sulfate under Superambient Conditions

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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.

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Authors and Affiliations

  1. Lawrence Berkeley National Laboratory and Department of Chemistry, University of California, Berkeley, California, 94720

    Bijan Das & Kenneth S. Pitzer

  2. Department of Chemistry, North Bengal University, Darjeeling, 734 430, India

    Bijan Das

Authors
  1. Bijan Das
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  2. Kenneth S. Pitzer
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Das, B., Pitzer, K.S. Thermodynamic Properties of Aqueous Potassium Sulfate under Superambient Conditions. Journal of Solution Chemistry 28, 283–289 (1999). https://doi.org/10.1023/A:1022647610013

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  • DOI: https://doi.org/10.1023/A:1022647610013

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