1.

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

Answer»

`CaF_(2) + H_(2)SO_(4) to CaSO_(4) + 2HF`
`2HI + H_(2)SO_(4) to I_(2) + SO_(2) + 2H_(2)O`
`Cu + 2H_(2)SO_(4) to CuSO_(4) + SO_(2) + 2H_(2)O`
`NaCl + H_(2)SO_(4) to NaHSO_(4) + HCl`

SOLUTION :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`


Discussion

No Comment Found

Related InterviewSolutions