Hot concentrated sulpuric acis is a moderatly strong oxidizing agent. Which of the following reaction does not shwo oxidizing behaviour?

Options

A. `Cu+2H_(2)SO_(4)toCuSO_(4)+SO_(2)+2H_(2)O`
B. `3S+2H_(2)SO_(4) to 3SO_(2)+2H_(2)O`
C. `C+2H_(2)SO_(4)toCO_(2)+2SO_(2)+2H_(2)O`
D. `CaF_(2)+H_(2)SO_(4)toCaSO_(4)+2HF`

Answer

D

Explanation

Concentrated `H_(2)SO_(4)` act strong oxidizing agent so oxidizes non metal
`underset(0)(C)+underset(+6)(2H_(2)SO_(4))tounderset(+4)(CO_(2))+underset(+4)(2SO_(2))+2H_(2)O`
`underset(0)(3S)+underset(+6)(2H_(2)SO_(4))tounderset(+4)(2SO_(2))+2H_(2)O`
`underset(0)(C)u+underset(+6)(H_(2)SO_(4)) overset(+2)(Cu)SO_(4)+underset(+4)(SO_(4))+H_(2)O`
`Caoverset(-1)(F_(2))+overset(+6)(H_(2)SO_(4))to overset(+6)(CaSO_(4))+overset(-1)(2HF)`