Question

Of the following, the anhydride of nitric acid is$:$

• A. $N_{2}O$
• B. $NO$
• C. $N{O}_2$
• D. $N_2{O}_5$

Answer 1

Answer: (D)

$N_2{O}_5$

$\text{Dinitrogen pentoxide},N_2{O}_5$ is the anhydride of $\text{nitric acid},HN{O}_3$.

$N_2{O}_5$ reacts with $H_{2}O$ to form $HN{O}_3$.
$N_2{O}_5+H_{2}O\to 2HN{O}_3$

Hence, option $D$ is correct.