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A metal nitrate reacts with KI solution ...

A metal nitrate reacts with KI solution to give a black precipitate which on addition of excess of KI solution forms an orange coloured solution. The cation of metal nitrate is :

A

`Hg^(2+)`

B

`Bi^(3+)`

C

`Pb^(2+)`

D

`Cu^(2+)`

Text Solution

Verified by Experts

The correct Answer is:
B
It is the correct answer :
`Bi(NO_(3))_(3) + 3 Kl rarr underset(("Black"))(Bl_(3) (s)) + 3KNO_(3)`
`Bl_(3) + Kl rarr underset("Orange coloured solution")(K [Bl_(4)])`
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