Abstract
The analytic expressions for the dynamic coefficient of thermal conductivity λ(ω) and for the dynamic module of thermoelasticity Z(ω) of the electrolyte solutions are obtained by the use of kinetic equations for the one-particle fax→at and two-particle fabx→ax→bt distribution functions. We restrict our attention to the spherical symmetric case and simple semi-phenomenological model in the framework of the osmotic theory of electrolyte solutions at the definite values of interaction potential Φabr→ and the equilibrium pair distribution function gabr→. We investigate the frequency dispersion and perform numerical calculations of λ(ω) and Z(ω) for NaCl aqueous solution as function of temperature T at a fixed ion concentration C. Theoretical results for temperature dependence of λ are in quantitative agreement with experimental data. It is shown that a field of frequency dispersion of λ(ω) and Z(ω) is wide if the diffusion mechanism, i.e. the structural relaxation, is taken into account.
Published Version
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