Question

Determine $K_{sp}$, if the molar concentration of $A{g}^{+}$ ions in $1$ liter of a saturated water solution of silver chloride is $1.38\times {10}^{-5}$ mole$/$liter.

• A. $0.34\times {10}^{-10}$
• B. $0.69\times {10}^{-5}$
• C. $1.90\times {10}^{-10}$
• D. $2.76\times {10}^{-5}$
• E. $2.76\times {10}^{-10}$

Answer 1

The correct option is C $1.90\times {10}^{-10}$

$AgCl\rightleftharpoons A{g}^{+}+C{l}^{-}$
$K_{sp}=\left[A{g}^{+}\right]\left[C{l}^{-}\right]$
$\left[A{g}^{+}\right]=\left[C{l}^{-}\right]=1.38\times {10}^{-5}M$
$K_{sp}=1.38\times {10}^{-5}\times 1.38\times {10}^{-5}=1.90\times {10}^{-10}$