Ion-exchange equilibria for the pair cesium-strontium between aqueous chloride solutions and a montmorillonite clay have been studied in the temperature range 5°—75°. Data from chromatographic elution experiments have been found to be unreliable because of nonequilibrium effects, and a method independent of rate behavior has been applied. From the data obtained, equilibrium constants, solid-phase activity coefficients, heat content and entropy changes for the reaction have been evaluated.
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Gaines et al. (1955) studied this question.
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