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Densities of the NaNO3 + NaCl + H2O and NaNO3 + KCl + H2O Systems and Their Correlation with the Pitzer Model

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Centro de Investigación Científico y Tecnológico para la Minería, Departamento de Ingeniería Química, Universidad de Antofagasta, Chile, and Departamento de Química Física, Universidad de La Laguna, Tenerife, España
* To whom correspondence should be addressed. Tel: 56 55 637313. Fax: 56 55 637801. E-mail: [email protected]
†Universidad de Antofagasta.
‡Universidad de La Laguna.
Cite this: J. Chem. Eng. Data 2008, 53, 12, 2902–2906
Publication Date (Web):November 4, 2008
https://doi.org/10.1021/je800638f
Copyright © 2008 American Chemical Society

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    Abstract

    Densities for two ternary systems, NaNO3 (1) + NaCl (2) + H2O (3) and NaNO3 (1) + KCl (2) + H2O (3), have been measured at (20, 25, and 30) °C. The experimental study was carried out for four total ionic strength values, I = I1 + I2 ≈ (0.1, 1, 2, and 3) mol·kg−1, and for each total ionic strength, the values of the ionic strength fraction of the NaCl or KCl were y2 ≈ 0.2, 0.4, 0.6, and 0.8. The parameters of the Pitzer model were fit to the experimental density values. Also, using this model, we determined the volume of mixing (ΔVM) at constant ionic strength and at 25 °C, for the two ternary systems studied in the present work. In general, the values for ΔVM are positive, which indicates that the mixed solutes possess an opposite structural form, resulting in an attraction with an increase in volume in every ternary system.

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    Cited By

    This article is cited by 2 publications.

    1. Doudou Yao, Panchun Tang, Ping Song, Ze Sun. Viscosities and Densities of Mixed Aqueous Alkali Metal Nitrate Solutions at T = (293.15–333.15) K. Journal of Chemical & Engineering Data 2022, 67 (9) , 2088-2097. https://doi.org/10.1021/acs.jced.2c00074
    2. Wutao Wei, Jiaqiang Xu, Weihua Chen, Liwei Mi, Jiujun Zhang. A review of sodium chloride-based electrolytes and materials for electrochemical energy technology. Journal of Materials Chemistry A 2022, 10 (6) , 2637-2671. https://doi.org/10.1039/D1TA09371A

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