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  • 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.

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.

Answers (1)

(A)=NH_{4}NO_{2},\; \; (B)=N_{2},\; \; \; \; (C)=NH_{3},\; \; \; \; \; (D)=HNO_{3}

NH_{4}NO_{2}\overset{Heat}{\rightarrow}N_{2}+2H_{2}O

N_{2}+3H_{2}\overset{Catalyst}{\rightarrow}2NH_{3}

4NH_{3}+5O_{2}\rightarrow 4NO+6H_{2}O

4NO+O_{2}\rightarrow 2NO_{2}

3NO_{2}+H_{2}O\rightarrow 2HNO_{3}+NO

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