Question 15.15: Calculate the molar solubility of AgI....
Calculate the molar solubility of AgI.
Step-by-Step
\operatorname{AgI}(s)\xrightleftharpoons[]{}\operatorname{Ag}^{+}(a q)+I^-(a q) \\ K_{\mathrm{sp}}\,=\,[\mathbf{A}\mathbf{g}^{+}][\mathbf{I}^{-}] \\ S\,=\,[\mathbf{A}\mathbf{g}^{+}]\,=\,[I^{-}] \\ K_{\mathrm{sp}}\,=\,[\mathbf{A}\mathbf{g}^{+}][\mathbf{I}^{-}] \\ = S \times S \\ =S^2 \\ S\,=\,{\sqrt{K_{\mathrm{sp}}}} \\ S\,=\,\sqrt{8.51\times10^{-17}} \\ = 9.22 \times 10^{-9} M
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