question_answer

The solubility product of \[\text{A}{{\text{g}}_{\text{2}}}\text{Cr}{{\text{O}}_{\text{4}}}\]is \[32\times {{10}^{-12}}.\] What is the concentration of \[\text{CrO}_{\text{4}}^{\text{-}}\] ions in that solution?

A) \[\text{2 }\!\!\times\!\!\text{ 1}{{\text{0}}^{\text{-4}}}\text{M}\]

B) \[\text{16 }\!\!\times\!\!\text{ 1}{{\text{0}}^{\text{-4}}}\text{M}\]

C) \[\text{8 }\!\!\times\!\!\text{ 1}{{\text{0}}^{\text{-4}}}\text{M}\]         

D) \[\text{8 }\!\!\times\!\!\text{ 1}{{\text{0}}^{\text{-8}}}\text{M}\]