Question

Which is the correct representation of the solubility product constant

$A{g}_{2}Cr{O}_4$ of

• A. [Ag⁺]² [CrO₄^2-]
• B. [Ag⁺] [CrO₄^2-]
• C. [2Ag⁺] [CrO₄^2-]
• D. [2Ag⁺]² [CrO₄^2-]

Answer 1

The correct option is A

[Ag⁺]² [CrO₄^2-]

$A{g}_{2}Cr{O}_4\leftrightharpoons 2\left[A{g}^{+}\right]+\left[Cr{O}_4^{2-}\right]$
Hence $K_{\left[sp\right]}=[A{g}^{+}{]}^2+[Cr{O}_4^{2-}]$