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which one of the following salts will ev...

which one of the following salts will evolve halogen on treatment with conc. `H_(2)SO_(4)` ?

A

`NaCI`

B

`CaCI_(2)`

C

`NaBr`

D

`KI`

Text Solution

Verified by Experts

The correct Answer is:
C, D
`2NaBr+underset(conc.)H_(2)SO_(4)rarr 2NaHSO_(4)+Br_(2)`
`2KI+H_(2)SO_(4)rarr 2KHSO_(4)+I_(2)uarr`
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