Zinc carbonate is precipitated from zinc sulphate solution by the addition of

Using the Gibbs energy change,$\Delta G^{o} = +63.3 \ kJ \ mol^{-1}$,for the following reaction in water at $25 \ ^{\circ}C$,calculate the solubility product constant $(K_{sp})$:
$Ag_{2}CO_{3(s)} \rightleftharpoons 2Ag^{+}_{(aq)} + C{O_{3}}^{2-}_{(aq)}$
$(R = 8.314 \ J \ K^{-1} \ mol^{-1})$

At $25 \, ^\circ C$,the $K_{sp}$ of $CaF_2$ is $1.7 \times 10^{-10}$. Which of the following combinations will result in the precipitation of $CaF_2$?

The solubility product of a sparingly soluble salt $AX_2$ is $3.2 \times 10^{-11}$. Its solubility in $mol/L$ is:

The solubility of $CaF_2$ in water is $1.7 \times 10^{-3} \ g/100 \ mL$ at $298 \ K$. Calculate the solubility product $(K_{sp})$ of $CaF_2$. (Molar mass of $CaF_2 = 78 \ g/mol$)

The correct representation for the solubility product of $SnS_2$ is: