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HI cannot be prepared by the action of c...

HI cannot be prepared by the action of conc. `H_(2)SO_(4)` on KI because

A

Hl is stronger than `H_(2)SO_(4)`

B

Hl is more volatile than `H_(2)SO_(4)`

C

`H_(2)SO_(4)` is an oxidizing agent

D

`H_(2)SO_(4)` forms complex

Text Solution

Verified by Experts

The correct Answer is:
C
`KI +H_(2)SO_(4) to KHSO_(4) + HI`
HI is formed but it is further oxidized by conc. `H_(2)SO_(4)` into `I_(2)`.
`2HI + H_(2)SO_(4) to 2H_(2)O +underset("Violet vapour")(I_(2)+SO_(2) uarr)`
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