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Question: Answered & Verified by Expert
An excess of $\mathrm{Ag}_{2} \mathrm{CrO}_{4}(\mathrm{~s})$ is added to a $5 \times 10^{-3} \mathrm{M}$ $\mathrm{K}_{2} \mathrm{CrO}_{4}$ solution. The concentration of $\mathrm{Ag}^{+}$in the solution is closest to
$\left[\right.$ Solubility product for $\left.\mathrm{Ag}_{2} \mathrm{CrO}_{4}=1.1 \times 10^{-12}\right]$
ChemistryIonic EquilibriumKVPYKVPY 2017 (19 Nov SB/SX)
Options:
  • A $2.2 \times 10^{-10} \mathrm{M}$
  • B $1.5 \times 10^{-5} \mathrm{M}$
  • C $1.0 \times 10^{-6} \mathrm{M}$
  • D $5.0 \times 10^{-3} \mathrm{M}$
Solution:
1971 Upvotes Verified Answer
The correct answer is: $1.5 \times 10^{-5} \mathrm{M}$
$1.1 \times 10^{-12}=\left[\mathrm{Ag}^{+}\right]^{2}\left[5 \times 10^{-13}\right]$
$\therefore\left[\mathrm{Ag}^{+}\right]=1.5 \times 10^{-5}$

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