pBlock ElementsII 1 Question 50
50. Nitrogen (I) oxide is produced by
(a) thermal decomposition of $\mathrm{NH} _{4} \mathrm{NO} _{3}$
(b) disproportionation of $\mathrm{N} _{2} \mathrm{O} _{4}$
(c) thermal decomposition of $\mathrm{NH} _{4} \mathrm{NO} _{2}$
(d) interaction of hydroxylamine and nitrous acid
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Answer:
Correct Answer: 50. (a,d)
Solution:
- $\mathrm{NH} _{4} \mathrm{NO} _{3} \xrightarrow{\text { Heat }} \mathrm{N} _{2} \mathrm{O}+2 \mathrm{H} _{2} \mathrm{O}$
$\mathrm{NH} _{2} \mathrm{OH} \cdot \mathrm{HCl}+\mathrm{NaNO} _{2} \longrightarrow \mathrm{NaCl}+2 \mathrm{H} _{2} \mathrm{O}+\mathrm{N} _{2} \mathrm{O}$
However, $\mathrm{NH} _{4} \mathrm{NO} _{2}$ on heating gives $\mathrm{N} _{2}$.
