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Method for Calculating the Density of Mixed Solutions of Strong Electrolytes

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Abstract

A method is proposed for calculating the density of solutions of strong electrolytes using the product of the apparent molar volume of the electrolyte by its molality. This method can be used to calculate the density of mixed electrolyte solutions, for example, when determining the activity by the Gibbs–Duhem equation. According to the literature data on the densities of solutions at 20°C, the apparent molar volumes of NaCl, NaNO3, KCl, KNO3, and SrCl2 are calculated and the high accuracy of calculations is demonstrated.

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Funding

This study was financed by the Russian Science Foundation (project no. 18-13-00475).

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Authors and Affiliations

  1. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow, Russia

    N. N. Kulov

  2. Mendeleev University of Chemical Technology of Russia, Moscow, Russia

    A. V. Ochkin

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  1. N. N. Kulov
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  2. A. V. Ochkin
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Correspondence to N. N. Kulov or A. V. Ochkin.

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Kulov, N.N., Ochkin, A.V. Method for Calculating the Density of Mixed Solutions of Strong Electrolytes. Theor Found Chem Eng 54, 1223–1228 (2020). https://doi.org/10.1134/S0040579520060068

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  • DOI: https://doi.org/10.1134/S0040579520060068

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