Irreversible thermodynamic parameters for isothermal vectorial transport processes in aqueous caesium chloride solutions

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Abstract
Equivalent conductances of aqueous caesium chloride solutions have been measured in the range 0·1–3·5N. These have been combined with literature values of transport numbers and diffusion coefficients to give Onsager transport and frictional coefficients in the concentration range 0·25–3·0N. The relative sizes of these coefficients are discussed in terms of solvation and water structure in a comparison with the other alkali chloride salts. The physical significance of the frictional coefficients is developed and the percentage of an applied force opposed by friction with other solution species is calculated. Abnormalities in caesium–chloride interactions are tentatively ascribed to ion association.