Abstract
Individual ionic activity coefficients of several chloride salts in aqueous solutions are predicted using the II + IW theory. The two combinations of the II + IW theory proposed in this work are mean spherical approximation plus Born equation. Different calculated ion radii are used in calculations. The predicted results were presented and analyzed compared with the experimental data. The results show that the II + IW theory predicts reasonably well the individual ionic activity coefficients of the specific electrolytes in aqueous solutions. The results show that adjusting ion radius can adjust the ion-ion interaction and improve modeling performance for individual ionic activity coefficients. The electrostatic interaction terms and the effects of ion radius are further studied and discussed.
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