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Question 16.11: A particular saturated solution of silver chromate, Ag2CrO4,......

A particular saturated solution of silver chromate, Ag_{2}CrO_{4},  has  [Ag^{+}] = 5.0\times 10^{-5}  M  and  [CrO_{4}  ^{2-}] = 4.4 \times 10^{-4}  M. What is the value of K_{sp}  for  Ag_{2}CrO_{4}?

STRATEGY

Substituting the equilibrium concentrations into the expression for K_{sp} of Ag_{2}CrO_{4} gives the value of K_{sp}.

IDENTIFY
Known Unknown
[CrO_{4}  ^{2-}]=4.4\times 10^{-4}  M K_{sp}
[Ag^{+}]=5.0\times 10^{-5}  M
Step-by-Step
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K_{sp}=[Ag^{+}]^{2}[CrO_{4}  ^{2-}]=(5.0\times 10^{-5})^{2}(4.4\times 10^{-4})1.1\times 10^{-12}

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