On heating compound (A) gives a gas (B) which is a constituent of air.
This gas when treated with 3 moles of hydrogen `(H_(2))` in the presence of a catalyst gives another gas (C) which is basic in nature. Gas C on further oxidation 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 .

Explanation

The available information suggests that the given compound (A) is ammonium nitrite. Upon heating, it gives nitrogen gas (A) which is a constituent of air. When reacted with hydrogen, it forms ammonia (C ). It is of basic nature. When oxidised in the presence of moisture, ammonia is coverted to nitric acid (D). It is a part of acid rain. The chemical reactions involved are listed.
`underset(" Amm. nitrite"(A))(NH_(4)NO_(2)(s)) overset("heat") to underset((B)) N_(2)(g) +2H_(2)O(g)`
`N_(2)(g) +3H_(2)(g) overset(K_(2)O//Al_(2)O_(3)) underset("heat") to underset((C )) 2NH_(3)(g)`
`{:(4NH_(3)(g) +5O_(2)(g) to 4NO(g) +6H_(2)O(l)),(4NO(g)+O_(2)(g)to 4NO_(2)(g)),(3NO_(2)(g)+H_(2)O(aq)to underset("Acid rain"(D))(2HNO_(3)(aq))+NO(g)):}`