Ion association of caesium chloride solutions and its effect upon the interionic frictional coefficients of an irreversible thermodynamic analysis

Abstract

Equivalent conductances of aqueous caesium chloride solutions have been measured in the range 0·01–0·10N. These have been analysed by the methods of Fuoss and Guggenheim to obtain the degrees of dissociation and the association constant, K_a. The agreement between the two theoretical treatments is excellent. The analysis of transport processes in an associated 1 : 1 electrolyte by irreversible thermodynamics is developed and compared with the stoicheiometric treatment. The true interionic friction for caesium chloride is calculated and compared with that for the completely dissociated alkali–metal halides. The correction reduces this interionic friction from its apparent value calculated on a stoicheiometric basis.