KCET · Chemistry · Practical Chemistry
Which of the following compound on heating gives \(\mathrm{N}_{2} \mathrm{O}\) ?
- A \(\mathrm{Pb}\left(\mathrm{NO}_{3}\right)_{2}\)
- B \(\mathrm{NH}_{4} \mathrm{NO}_{3}\)
- C \(\mathrm{NH}_{4} \mathrm{NO}_{2}\)
- D \(\mathrm{NaNO}_{3}\)
Answer & Solution
Correct Answer
(B) \(\mathrm{NH}_{4} \mathrm{NO}_{3}\)
Step-by-step Solution
Detailed explanation
\(\mathrm{NH}_{4} \mathrm{NO}_{3}\) on heating gives nitrous oxide \(\left(\mathrm{N}_{2} \mathrm{O}\right)\). Its reaction is as follow
\(\underset{\substack{\text { nitrate }}}{\mathrm{NH}_{4} \mathrm{NO}_{3}} \stackrel{\Delta}{\longrightarrow} \underset{\text { Nitrous oxide }}{\mathrm{N}_{2} \mathrm{O}(g)}+\mathrm{H}_{2} \mathrm{O}\)
Nitrous oxide is also called laughing gas.
\(\underset{\substack{\text { nitrate }}}{\mathrm{NH}_{4} \mathrm{NO}_{3}} \stackrel{\Delta}{\longrightarrow} \underset{\text { Nitrous oxide }}{\mathrm{N}_{2} \mathrm{O}(g)}+\mathrm{H}_{2} \mathrm{O}\)
Nitrous oxide is also called laughing gas.
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