Chapter 13: Problem 116
Iodine \(\left(\mathrm{I}_{2}\right)\) is only sparingly soluble in water (left photo). Yet upon the addition of iodide ions (e.g., from KI), iodine is converted to the triiodide ion, which readily dissolves (right photo): $$ \mathrm{I}_{2}(s)+\mathrm{I}^{-}(a q) \rightleftarrows \mathrm{I}_{3}^{-}(a q) $$ Describe the change in solubility of \(\mathrm{I}_{2}\) in terms of the change in intermolecular forces.
Short Answer
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Key Concepts
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