Abstract
General relations are presented to relate the fluctuation thermodynamic properties of multicomponent electrolyte solutions (concentration derivatives of the chemical potential, partial molar volume, and compressibility) to integrals of the total correlation function (Kirkwood-Buff solution theory) and of the nondivergent portion of the direct correlation function. Detailed expressions are given for the single-salt, single-solvent system. It appears that the direct correlation function expressions may be of more practical use in developing correlations for solution properties because, unlike the total correlation functions, terms exist which distinguish between cation and anion interactions with water and with other ions.
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O'Connell, J.P., DeGance, A.E. Thermodynamic properties of strong electrolyte solutions from correlation functions. J Solution Chem 4, 763–778 (1975). https://doi.org/10.1007/BF00650532
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DOI: https://doi.org/10.1007/BF00650532