ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Dissociation model of the electrical-conductivity of molten-salt mixtures .2. Binary univalent systems with common ion

M. Chrenková and V. Daněk

Institute of Inorganic Chemistry, Centre for Chemical Research, Slovak Academy of Sciences, CS-842 36 Bratislava

Abstract: The dissociation model of the electrical conductivity of molten salt mixtures, based on the assumption of an incomplete dissociation of com­ponents, was verified in a number of binary univalent systems with a common anion as well as with a common cation, such as systems of alkali halides, of alkali metal nitrates and of silver halides. It was found that in the systems with the common anion the component with a larger cation is always more dissociated. In systems with a common cation the higher value of the dissociation degree always belongs to the component with the lower polarizability of anion. The linear dependence of the difference of the dissociation degrees of components (α₀₁-α₀₂) on the geometrical parameter ∆ was found. This parameter represents the fractional difference in the ionic radii of the like charged ions. The correlation between the course of the molar conductivity and the enthalpy of mixing in the studied systems is discussed.

Full paper in Portable Document Format: 443a329.pdf

Chemical Papers 44 (3) 329–337 (1990)