Mercurous chloride , ` Hg_(2)Cl_(2)`, in a saturated solution has the equilibrium called solubility equilibrium . The equilibrium constant for this solubility equilibrium will be

Options

A. `[Hg^(+)] [Cl^(-)]`
B. `[Hg^(+)]^(2) [ Cl^(-)]^(2)`
C. ` [ Hg_(2)^(2).^(+)] [ Cl^(-)]^(2)`
D. `2 [Hg^(+)] xx2 [Cl^(-)]`

Answer

C

Explanation

The equilibrium reaction ` Hg _(2)Cl_(2) (s) hArr Hg_(2)^(2+) (aq) + 2 Cl^(-) (aq) `
Hence, `K= [ Hg_(2)^(2+) ] [Cl^(-)]^(2`