Ion Association Phenomena and Static Dielectric Properties in Electrolyte Solutions: Application of the Effective Mean Spherical Approximation – Mass Action Law Approach

Myroslav Holovko¹ and Vitaliy Kapko^1,2

¹ Institute for Condensed Matter Physics, National Academy of Sciences of Ukraine, 1 Svientsitskii Str., 79011 Lviv, Ukraine
² Center for Biological Physics, Arizona State University, PO Box 871604, Tempe, AZ, USA 85287-1604
* Corresponding author: E-mail: holovko@icmp.lviv.ua

Abstract
Mean spherical approximation – mass action law approach is developed to describe the influence of ion association on solvent and solution dielectric constants in electrolyte solutions. The dependences of the dielectric constants on electrolyte concentration, ionic sizes, and the degree of ion association are analyzed. The results are compared with recent experimental data for aqueous solutions of nitrate and formate salts and a fair agreement is obtained.

Keywords: Electrolyte solutions, ion association, dielectric properties, mean spherical approximation.