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A mixture, on heating with conc. H(2)SO(...

A mixture, on heating with conc. `H_(2)SO_(4)` and `MnO_(2)` , librates brown vapour of

A

`Br^(-)`

B

`NO_(3)^(-)`

C

`Cl^(-)`

D

`I^(-)`

Text Solution

Verified by Experts

The correct Answer is:
A
It is a lab method for the preparation of `Br_(2)` e.g
`2KBR + MnO_(2) + H_(2)SO_(4) to underset("Brown gass")(Br_(2)) + 2KHSO_(4) + MnSO_(4)`
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