${K_{sp}}$ for $Cr{(OH)_3}$ is $2.7 \times {10^{ – 31}}$. What is its solubility in moles / litre.

Which of the following compound will not dissolve in hot mixture of $NaOH$ and $H_2O$ ?

The stoichiometry and solubility product of a salt with the solubility curve given below is, respectively

If solubility product of $HgS{O_4}$ is $6.4 \times {10^{ – 5}}$, then its solubility is

For the reaction in aqueous solution $Z{n^{2 + }} + {X^ – } \rightleftharpoons Zn{X^ + },$ the ${K_{eq}}$ is greatest when $X$ is