Which of the following reactions is an example of auto reduction?
A Fe3O4 + 4CO → 3Fe + 4CO2
B Cu2O + C → 2Cu + CO
C Cu2+ (aq) + Fe (s) → Cu (s) + Fe2+ (aq)
D Cu20 + 1/2 Cu2S → 3Cu + 1/2 SO2
Answer:C
Which of the following reactions is an example of auto reduction?
A Fe3O4 + 4CO → 3Fe + 4CO2 B Cu2O + C → 2Cu + CO C Cu2+ (aq) + Fe (s) → Cu (s) + Fe2+ (aq) D Cu20 + 1/2 Cu2S → 3Cu + 1/2 SO2