Chemistry - Ionic Equilibrium Question with Solution | TestHub

${\mathrm{Cd}}^{2+}$ ion is precipitate after passing ${\mathrm{H}}_2\mathrm{S}$ in acidified solution. In the final solution 0.1 milli-mole of ${\mathrm{CdSO}}_4$ are present in 10 ml acidic saturated solution of $0.10\mathrm{M}{\mathrm{H}}_2\mathrm{S}$. What is the pH of the solution after filtering off precipitate, boiling off ${\mathrm{H}}_2\mathrm{S}$ and making the solution 100 ml by adding ${\mathrm{H}}_2\mathrm{O}$ :

[K_sp of CdS = $10^{-28}$, For H₂S: $K_{a1}=10^{-9}$, $K_{a2}=10^{-20}$]