Question

Which chemical equation correctly represents the decomposition reaction that takes place when ammonia breaks down to form hydrogen gas and nitrogen gas?ANH3 + H2 → N2BNH3 → N2 + H2CNH3 → NH2 + HDN2 + H2 → NH3?

Answer 1

B. NH3 → N2 + H2

Step-by-step explanation:

Ammonia decomposes into nitrogen and hydrogen, both in the gaseous state:

∴ balanced reaction:

• 2NH3(g) → N2(g) + 3H2(g)

Answer 2

The best option is B

B NH₃ → N₂ + H₂

The reaction for ammonia decomposition is given as

2NH₃ → N₂ + 3H₂

Step-by-step explanation:

In catalytic decomposition of ammonia two molecules of ammonia (NH₃) are split into three molecules of hydrogen (H₂) and one molecule of nitrogen (N₂) in a slightly endothermic reaction process as follows

2NH₃ → N₂ + 3H₂ with ΔH = 11 kcal/mol

Ammonia is known to decompose in the presence of platinum loaded titanium oxide photocatalyst and it should also be noted that at high temperatures the rate of ammonia decomposition is appreciable in the process of carbonitriding