An analytic model for aqueous electrolyte solutions based on fluctuation solution theory

A model for strong aqueous electrolyte solutions based on fluctuation solution theory is introduced. The key thermodynamic quantities in the model—direct correlation function integrals—are evaluated using results from the mean spherical approximation for mixtures of charged hard spheres for the elec...

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Bibliographic Details
Published in:Fluid phase equilibria 1988, Vol.39 (3), p.227-266
Main Authors: Perry, R.L., Massie, J.D., Cummings, P.T.
Format: Article
Language:English
Subjects:
Catalysis
Catalysts: preparations and properties
Catalytic reactions
Chemistry
Exact sciences and technology
General and physical chemistry
General. Nomenclature, chemical documentation, computer chemistry
Theory of reactions, general kinetics
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
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Summary:A model for strong aqueous electrolyte solutions based on fluctuation solution theory is introduced. The key thermodynamic quantities in the model—direct correlation function integrals—are evaluated using results from the mean spherical approximation for mixtures of charged hard spheres for the electrostatic part, from hard sphere mixture theory for the excluded volume part and from corrections for infinite dilution properties obtained from experimental data. This model is compared to experimental data on aqueous NaCl and NaBr solutions at room temperature from infinite dilution to 25% salt by weight at pressures of 1 and 250 bar with very encouraging results.
ISSN:0378-3812
1879-0224
DOI:10.1016/0378-3812(88)85007-6