Question

What is the correct representation of solubility product of ${Ag}_{2}Cr{O}_4$?

• A. ${\left[{Ag}^{+}\right]}^2\left[Cr{O}_4^{-2}\right]$
• B. $\left[{Ag}^{+}\right]\left[Cr{O}_4^{-2}\right]$
• C. $\left[{2Ag}^{+}\right]\left[Cr{O}_4^{-2}\right]$
• D. ${\left[{2Ag}^{+}\right]}^2\left[Cr{O}_4^{-2}\right]$

Answer 1

The correct option is A ${\left[{Ag}^{+}\right]}^2\left[Cr{O}_4^{-2}\right]$

The equilibrium is:
${Ag}_{2}Cr{O}_4\rightleftharpoons 2{Ag}^{+}+Cr{O}_4^{2-}$

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