Question

State one relevant observation for each of the following reactions:
Burning of ammonia in air.

Answer 1

Reaction:
1. When Ammonia (${\text{NH}}_3$) is burned in air, that is in the presence of Oxygen, the evolution of Nitrogen gas takes place with the formation of water.
$4{\text{NH}}_3\left(g\right)+3{\text{O}}_2\left(g\right)\to 2{\text{N}}_2\left(g\right)\uparrow +6{\text{H}}_2\text{O (l)}$
Observation:
1. The Nitrogen gas that is evolved is a greenish yellow flame of burning at nozzle.