Question

Name the reducing agent in the following reactions: [5]

i. Fe2O3 + 3CO → 2Fe + 3CO2

ii. CuO + H2 → Cu + H2O

iii. ZnO + C → Zn + CO

iv. 3CuO + 2NH3 → 3Cu + N2 + 3H2O

v. PbO + C → Pb + CO​

Answer 1

Answer:

Reducing agents are those substances which reduce other substances (addition of hydrogen or removal of oxygen) and themselves get oxidised (addition of oxygen or removal of hydrogen).

Fe

2

O

3

+3CO→2Fe+3CO

2

In the above reaction, carbon monoxide (CO) acts as a reducing agent as it reduces ferric(III)oxide(Fe

2

O

3

) to form iron (Fe) and carbon dioxide (CO

2

).

Answer 2

Answer:

$\bold\red{ iv. 3CuO + 2NH3 → 3Cu + N2 + 3H2O }$