Activity coefficients in mixed solvent electrolyte solutions |
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| Affiliation: | 1. Faculty of Science, J. E. Purkinje University, 400 96 Ústí nad Labem, Czech Republic;2. Institute of Chemical Process Fundamentals, Czech Acad. Sci., 165 02 Prague 6, Czech Republic;3. Department of Physical Chemistry, University of Chemistry and Technology, Prague, 166 28 Prague 6, Czech Republic;4. Institute of Thermomechanics, Czech Acad. Sci., 18000 Prague 8, Czech Republic;1. Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA;2. Department of Chemical Engineering, Columbia University, New York, NY 10027, USA;3. Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA;4. Department of Physics, Faculty of Science, University of South Bohemia, České Budějovice 370 05, Czech Republic;5. Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Prague 16610, Czech Republic |
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| Abstract: | A brief, rigorous derivation is given for activity coefficients used in phase equilibruim calculations of multicomponents salts and solvents where an extended Debye—Hückel theory for long-range interactions is combined with short-range interaction effects using an excess Gibbs energy model, such as UNIQUAC. Calculations indicate only minor differences from approximate forms previously used for the salt effect on azeotropes. |
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