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In which of the following reactions conc...

In which of the following reactions conc. `H_(2)SO_(4)` is used as an oxidising reagent?

A

`CaF_(2) + H_(2)SO_(4) rarr CaSO_(4) + 2HF`

B

`2 HI + H_(2)SO_(4) rarr I_(2) SO_(2) + 2H_(2)O`

C

`Cu + 2H_(2)SO_(4) rarr CuSO_(4) + SO_(2) + 2H_(2)O`

D

`NaCl + H_(2)SO_(4) rarr NaHSO_(4) + HCl`

Text Solution

Verified by Experts

The correct Answer is:
B, C
`2overset(-1)(HI)+H_(2)overset(+6)(SO)_(2) rarr overset(0)(I_(2))+overset(+4)(SO)_(2)+H_(2)O" ,"overset(0)(Cu) + 2H_(2)overset(+6)(SO)_(4) rarr CuSO_(4)+ overset(+4)(SO)_(2)+2H_(2)O`
In these two reactions, `H_(2)SO_(4)` acts as an oxidising agent.
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