Question

The $K_{sp}$ of $AgI$ is $1.5\times {10}^{-16}$.On mixing equal volumes of the following solution,precipitation will occur only with:

• A. ${10}^{-7}MA{g}^{+}$ and ${10}^{-19}M{I}^{-}$
• B. ${10}^{-8}MA{g}^{+}$ and ${10}^{-8}M{I}^{-}$
• C. ${10}^{-16}MA{g}^{+}$ and ${10}^{-16}M{I}^{-}$
• D. ${10}^{-19}MA{g}^{+}$ and ${10}^{-9}M{I}^{-}$

Answer 1

The correct option is B ${10}^{-8}MA{g}^{+}$ and ${10}^{-8}M{I}^{-}$

$K_{sp}$ of $AgI=1.5\times {10}^{-16}$

${10}^{-8}MA{g}^{+}$ and ${10}^{-8}M{I}^{-}$

Ionic product $={10}^{-16}$

$K_{sp}=$ ionic product