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In which of the following pairs the prec...

In which of the following pairs the precipitates are red and black coloured respectively and both precipitates are soluble in excess `Kl` solution?

A

`HgI_(2),Hg_(2)I_(2)`

B

`HgI_(2),BiI_(3)`

C

`Cu_(2)I_(2),AgI`

D

`CdI_(2),PbI_(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
`HgI_(2) overset(KI)rarr K_(2)HgI_(4)`
`BiI_(3) overset(KI)rarr K[BiI_(4)]`
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