Answer: (i) displacement reaction (iii) redox reaction
4NH3(g) + 5O2(g)→ 4NO(g) + 6H2O(g)
Oxygen displaces the hydrogen of ammonia. Hence, this is a displacement reaction. The nitrogen of ammonia is getting oxidized with the addition of oxygen.
- Both oxidation and reduction occur at the same time, the above reaction is referred to as a redox reaction.
- Since the H of NH3 is displaced by oxygen, it is a displacement reaction.
- It is usually followed by oxidation and reduction, a displacement reaction is also a redox reaction.