Q96 / 200 · NEET 2024 · Chemistry
The products A and B obtained in the following reactions, respectively, are
$\begin{aligned}
& 3 \mathrm{ROH}+\mathrm{PCl}_3 \rightarrow 3 \mathrm{RCl}+\mathrm{A} \\
& \mathrm{ROH}+\mathrm{PCl}_5 \rightarrow \mathrm{RCl}+\mathrm{HCl}+\mathrm{B}
\end{aligned}$
- A$\mathrm{POCl}_3$ and $\mathrm{H}_3 \mathrm{PO}_4$
- B$\mathrm{H}_3 \mathrm{PO}_4$ and $\mathrm{POCl}_3$
- Correct answerC$\mathrm{H}_3 \mathrm{PO}_3$ and $\mathrm{POCl}_3$
- D$\mathrm{POCl}_3$ and $\mathrm{H}_3 \mathrm{PO}_3$
Solution
These reactions are preparation of haloalkanes from alcohols.
$3 \mathrm{ROH}+\mathrm{PCl}_3 \longrightarrow 3 \mathrm{RCl}+\mathrm{H}_3 \mathrm{PO}_3$
$\mathrm{ROH}+\mathrm{PCl}_5 \longrightarrow \mathrm{RCl}+\mathrm{HCl}+\mathrm{POCl}_3$
$A$ and $B$ are $\mathrm{H}_3 \mathrm{PO}_3$ and $\mathrm{POCl}_3$ respectively.
Hence, the correct answer is option: 'C'.