The solubility product of $Mg(OH)_2$ is $1 \times 10^{-11}$. At what $pH$ will $Mg(OH)_2$ start to precipitate from a $0.1 \, M \, Mg^{2+}$ solution?

The moles of $Ag^{+}$ which must be added to decrease the concentration of $Cl^{-}$ from $4 \times 10^{-5} \ M$ to $10^{-5} \ M$ in $100 \ mL$ solution,if $K_{sp}$ for $AgCl$ is $10^{-10} \ M^2$ at $25 \ ^oC$.

$A$ precipitate of calcium oxalate $(CaC_2O_4)$ will not dissolve in which of the following?

Assertion : Addition of silver ions to a mixture of aqueous sodium chloride and sodium bromide solution will first precipitate $AgBr$ rather than $AgCl$.
Reason : $K_{sp}$ of $AgCl < K_{sp}$ of $AgBr$.

What is the expression for the solubility product of silver chromate $(Ag_2CrO_4)$ if its solubility is expressed as $S \ mol \ L^{-1}$?

For the precipitation of $AgCl$ by $Ag^{+}$ ions and $HCl$,which of the following is true?