Question

On heating compound (A) gives a gas (B) which is a constituent of air. This gas when treated with 3 mol of hydrogen (H₂) in the presence of a catalyst gives another gas (C) which is basic in nature. Gas C on further oxidations in moist condition gives a compound (D) which is a part of acid rain. Identify compounds (A) to (D) and also give necessary equations of all the steps involved.

Answer 1

(A) NH₄NO₂, (B) N₂, (C) NH₃, (D) HNO₃

(A) NH₄NO₂ \(\overset{Heat}{\rightarrow}\) N₂ + 2H₂O

(B) N₂ + 3H₂  \(\overset{Catalyst}{\rightarrow}\) 2NH₃

(C) 4NH₃ + 5O₂ → 4NO + 6H₂O

2NO + O₂ → 2NO₂

(D) 3NO₂ + H₂O → 2HNO₃ + NO