Question

The $K_{SP}$ of Agl is $1.5\times {10}^{-16}$. On mixing equal volumes of the following

solutions, 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. ${10}^{-9}MA{g}^{+}$ 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 = ${10}^{-16}$
$K_{SP}$ is more than Ionic product