Hot concentrated sulphate acid is a moderately strong oxidizing agent. Which of the following reactions does not show oxidizing behaviour?
A
Cu + 2H2SO4 $$ \to $$ CuSO4 + SO2 + 2H2O
B
S + 2H2SO4 $$ \to $$ 3SO2 + 2H2O
C
C + 2H2SO4 $$ \to $$ CO2 + 2SO2 + 2H2O
D
CaF2 + H2SO4 $$ \to $$ CaSO4 + 2HF
Explanation
CaF2 + H2SO4 $$ \to $$ CaSO4 + 2HF
Here, the oxidation state of every atom remains the
same so, it is not a redox reaction.