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Influence of Ion Solvation on the Properties of Electrolyte Solutions

Published

Author(s)

Marat Andreev, Juan J. DePablo, Alexandros Chremos, Jack F. Douglas

Abstract

It is widely appreciated that the addition of salts to water leads to significant changes in the thermodynamic and dynamic properties of these aqueous solutions, which have great significance in biology and manufacturing applications. However, no theoretical framework currently exists that describes these property changes in an internally consistent fashion. In previous work, we developed a coarse-grained computational model of electrolyte solutions capable of reproducing basic trends on how salts influence the viscosity and water diffusion coefficient. The present work explores the predictions of this model for basic thermodynamic properties of electrolyte solutions, namely the density, isothermal compressibility, and surface tension. Based on our model, we find that ion-specific effects on thermodynamics properties and by extension the dynamics of electrolyte solutions, derive primarily from the ion-solvation.
Citation
Journal of Physical Chemistry B
Volume
122
Issue
14

Keywords

electrolytes, salts, aqueous solutions

Citation

Andreev, M. , DePablo, J. , Chremos, A. and Douglas, J. (2018), Influence of Ion Solvation on the Properties of Electrolyte Solutions, Journal of Physical Chemistry B, [online], https://doi.org/10.1021/acs.jpcb.8b00518, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=924640 (Accessed April 15, 2024)
Created April 2, 2018, Updated October 12, 2021