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In which of the following reactions cone...

In which of the following reactions cone.` H_2SO_4` is used as an oxidising reagent ?

A

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

B

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

C

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

D

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

Text Solution

Verified by Experts

The correct Answer is:
A, B, C, D
Cu is first oxidised to oxide and then oxide combines with an acid to give copper sulphate.
`H_(2)SO_(4) to H_(2)O + SO_(2) + [O]`
`Cu + [O] to CuO`
`CuO + H_(2)SO_(4) to CuSO_(4) + H_(2)O`
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