Question

`HgCl_(2)` and `I_(2)` both when dissolved in water containing `I^(-)`ions, the pair of species formed is :
A. `Hgl_(2)I^(-)`
B. `Hgl_(4)^(2-), I_(3)^(-)`
C. `Hg_(2)l_(2), I^(-)`
D. `Hgl_(2), I_(3)^(-)`

Answer 1

Correct Answer - B
`HgCl_(2) + 4l^(-) (aq) rarr Hgl_(4)^(2-) (aq) + 2Cl^(-) (aq) l_(2) (s) + l^(-)(aq) rarr l_(3)^(-) (aq)`