Question

Answer the following questions with respect to the given figure.

1. Identify gas P and gas Q.
2. Give a balanced equation to convert ammonia into gas P by a method other than decomposition. State the property of ammonia used in carrying out the conversion.
3. Name fertiliser S and give a balanced equation for its preparation.
4. Name process T and state the conditions that enable conversion of ammonia to nitric oxide.
5. Give a balanced equation for the conversion of brown gas to liquid U.
6. Name fertiliser A.
7. Name process R.

Answer 1

(a) Gas P: Nitrogen (N₂)

Gas Q: Hydrogen (H₂)

(b) Ammonia can be converted into nitrogen by reacting it with chlorine when ammonia is in excess:

\[\ce{8NH3 + 3Cl2 -> N2 + 6NH4Cl}\]

Property of ammonia: Reducing property.

(c) Fertiliser S: Ammonium sulphate [(NH₄)₂SO₄]

\[\ce{2NH3 = H2SO4 -> (NH4)2SO4}\]

(d) Process T: Ostwald process.

Conditions: Ammonia is oxidised with oxygen in the presence of a platinum catalyst at about 800°C.

\[\ce{4NH3 + 5O2 ->[Pt][800°C] 4NO + 6H2O}\]

(e) The brown gas is nitrogen dioxide (NO₂) and liquid U is nitric acid (HNO₃).

\[\ce{4NO2 + O2 + 2H2O -> 4HNO3}\]

(f) Fertiliser A: Ammonium nitrate (NH₄NO₃)

(g) Process R: Haber process.