`Hg_(2)Cl_(2)(g)` in saturated aqeous solution has equilibrium constant equal to `:`

Options

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

Answer

B

Explanation

`Hg_(2)Cl_(2)(g)overset(aq)(hArr)Hg_(2)^(2+)(aq)+2Cl^(-)(aq)`
`K=([Hg_(2)^(2+)][Cl^(-)]^(2))/([Hg_(2)Cl_(2)]^(2))`
`K[Hg_(2)^(2+)][Cl^(-)]^(2)`
`:'[Hg_(2)Cl_(2)]1`