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SOLUBILITY, IONIC STRENGTH AND ACTIVITY COEFFICIENTS ...

Physical Chemistry Laboratory Experiment II-6b solubility , IONIC STRENGTH AND ACTIVITY COEFFICIENTS . References: 1. See `References to Experiments' for text references. 2. W. C. Wise and C. W. Davies, J. Chem. Soc., 273 (1938), "The Conductivity of Calcium Iodate and its solubility in salt Solutions". Background: Study the references to the text and the section on "Theory and Discussion" carefully. Know the definitions of the following and their interrelations: ACTIVITY a, ion ACTIVITY , ai, mean IONIC ACTIVITY , a . ACTIVITY coefficient, , ion ACTIVITY coefficient, i, mean IONIC ACTIVITY coefficient, . solubility , S in moles per liter solubility product constant in terms of (a) molarity, K and (b) ACTIVITY , Ks. IONIC STRENGTH , I. Debye-Huckel Theory expressions, "Limiting Law" and "Detailed Law". How solubility data are used to evaluate Ks? Balanced Redox reactions used to determine IO3- concentration.

The solubility of a salt in water can be influenced by the presence of other electrolytes in several ways: by a "common ion effect," by the occurrence of a chemical reaction involving one of the ions of the salt, or by a change in the activity coefficients of the ions of the salt. The latter effect is

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