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

On heating compound (A) gives a gas (B) which is a constituent of air.

1.	On heating compound (A) gives a gas (B) which is a constituent of air. This gas when treated with 3 mol 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.
Answer» Solution :Compound (A) to (D) are as FOLLOWS : (A) = `NH_4NO_2` (B) `=N_2` (C) `=NH_3` (D)`=HNO_3` The reactions are GIVEN as under : (i) `NH_4NO_2 OVERSET(DELTA)to N_2 + 2H_2O ` (ii) `N_2 + 3H_2 to 2NH_3` (iii) `4NH_3 + 5O_2 to 4NO + 6H_2O ` `2NO + O_2 to 2NO_2 ` `3NO_2 + H_2O to 2HNO_3 + NO`