A reducing agent (reductant) is a substance that loses electrons and gets oxidized in a chemical reaction.
(a) 4NH₃ + 5O₂ → 4NO + 6H₂O
- Reducing Agent: NH₃ (Ammonia)
- Reason: NH₃ loses hydrogen and gets oxidized to NO.
(b) H₂O + F₂ → HF + HOF
- Reducing Agent: H₂O (Water)
- Reason: H₂O donates electrons (loses hydrogen) and gets oxidized to HOF.
(c) Fe₂O₃ + 3CO → 2Fe + 3CO₂
- Reducing Agent: CO (Carbon Monoxide)
- Reason: CO loses electrons and gets oxidized to CO₂ while reducing Fe₂O₃ to Fe.
(d) 2H₂ + O₂ → 2H₂O
- Reducing Agent: H₂ (Hydrogen)
- Reason: H₂ donates electrons (loses hydrogen) and gets oxidized to H₂O.
Summary Table:
| Reaction | Reducing Agent |
|---|---|
| (a) 4NH₃ + 5O₂ → 4NO + 6H₂O | NH₃ |
| (b) H₂O + F₂ → HF + HOF | H₂O |
| (c) Fe₂O₃ + 3CO → 2Fe + 3CO₂ | CO |
| (d) 2H₂ + O₂ → 2H₂O | H₂ |
