MCQ
A solution is $0.1\, \mathrm{M}$ in $\mathrm{Cl}^{-}$and $0.001\, \mathrm{M}$ in $\mathrm{CrO}_{4}{ }^{2-}$. Solid $\mathrm{AgNO}_{3}$ is gradually added to it. Assuming that the addition does not change in volume and $\mathrm{K}_{\mathrm{sp}}(\mathrm{AgCl})=1.7 \times 10^{-10} \,\mathrm{M}^{2}$ and $\mathrm{K}_{\mathrm{sp}}\left(\mathrm{Ag}_{2} \mathrm{CrO}_{4}\right)=1.9 \,\times 10^{-12} \mathrm{M}^{3}$
Select correct statement from the following :
- ✓$\mathrm{AgCl}$ will precipitate first as the amount of $\mathrm{Ag}^{+}$needed to precipitate is low.
- B$\mathrm{AgCl}$ precipitates first because its $\mathrm{K}_{\mathrm{sp}}$ is high.
- C$\mathrm{Ag}_{2} \mathrm{CrO}_{4}$ precipitates first because the amount of $\mathrm{Ag}^{+}$needed is low.
- D$\mathrm{Ag}_{2} \mathrm{CrO}_{4}$ precipitates first as its $\mathrm{K}_{\mathrm{sp}}$ is low.