Frequency Dispersion of the Specific Conductance Coefficient in Aqueous Electrolyte Solutions

Abstract

Analytical expressions for the dynamic specific conductance coefficient σ(ω) and the dynamic electroelasticity modulus ∊(ω) are obtained by solving kinetic equations using specific expressions for the potential energy Φ_ab(r) of the interaction between structural units of the solution and the equilibrium radial distribution function g_ab(r). Friction coefficients β_a and β_b are calculated numerically; relaxation times τ_a, τ_b, τ_ab along with ∊(ω) and σ(ω) values are determined for aqueous solutions of LiCl, NaCl, KCl, and CsCl as functions of the concentration c, density ρ, and temperature T in a wide frequency range ω. The obtained theoretical data are presented in the form of tables and graphs and are compared with experimental results show a satisfactory agreement between them.