Current theories in the calculation of activity coefficients-II. Specific interaction theories applied to some equilibria studies in solution chemistry |
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Authors: | Elizalde M P Aparicio J L |
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Affiliation: | Departmento de Quimica Analítica, Universidad dei País Vasco, Apartado 644, 48080 Bilbao, Spain. |
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Abstract: | The adequation of the current theories for calculating activity coefficients has been studied for a series of ionic equilibria in analytical chemistry: the water ionic product as well as two reactions of complex formation and oxidation-reduction. In all the cases, the specific interaction theory (SIT) has proved to be adequate and simple to apply in a restricted interval (0.5-3M), whereas Pitzer's theory is outstanding for its high precision in reproducing experimental behaviour and to correlate values of equilibrium constants for different conditions and media. |
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