On heating compound (A) gives a gas (B) which is a constituent of air. This gas when treated with 3 moles of hydrogen (H2) 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.

 

 


 

The main constituents of air are nitrogen (78%) and oxygen (21%). Only N2 reacts with three moles of H2 in the presence of a catalyst to give NH3 (ammonia) which is a gas having basic nature. On oxidation, NH3 gives NO2 which Is a part of acid rain. So, the compounds A to D are as

A = NH4NO2 ;     B = N2 ;      C = NH3 ;     D = HNO3

 Reactions involved can be given, as

 

iNH4NO2(A)N2(B)+2H2O
(ii)N2[B]+3H22NH3[C]
(iii)4NH3+5O2Oxidation4NO+6H2O
(iv)2NO+O22NO2
(v)3NO2+H2O2HNO3(D)+NO