Question

Solubility of $Ca(OH{)}_2$Ca(OH)2 under the same condition is:

• A. $4s^3$
• B. $3s^4$
• C. $4s^2$
• D. $s^3$

Answer 1

The correct option is A $4s^3$

$Ca{\left(OH\right)}_2\rightleftharpoons {Ca}^{2+}+2O{H}^{-}$
$K_{sp}=\left[{Ca}^{2+}\right]{\left[O{H}^{-}\right]}^2$
$=\left(s\right){\left(2s\right)}^2=4s^3$