Question

Write chemical equations when:
I)Ammonia gas and oxygen in the form of homogeneous mixture is passed over heated platinum
2)Ammonia gas reacts with excess of chlorine gas.
3) Ammonia gas reacts with limited amount of chlorine gas.​

Answer 1

Answer:

1.

Catalyst used is Platinum. The catalyst glows since the catalytic oxidation of ammonia is an exothermic reaction. The industrial process is known as Ostwald's process for the manufacture of nitric acid.

4NH 3 +5O 2 800C Pt NO+H 2 O+△

2.Pure chlorine gas may react vigorously with ammonia gas. An excessive mix of the two gases in air can produce hazardous compounds such as nitrogen trichloride.

The following reaction takes place:

NH3+3Cl 2 ⟶NCl 3+3HCl

Ammonia reacts with excess of chlorine to form NCl

3 and HCl

3. NH 3+3Cl 2(excess)→3HCl+NCl 3