On reaction with sodium, $1 \mathrm{~mol}$ of a compound $\mathrm{X}$ gives $1 \mathrm{~mol}$ of…

On reaction with sodium, $1 \mathrm{~mol}$ of a compound $\mathrm{X}$ gives $1 \mathrm{~mol}$ of $\mathrm{H}_{2}$. Which one of the following compounds might be $X$?
  1. $\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}=\mathrm{CH}_{2}$
  2. $\mathrm{CH}_{3} \mathrm{COOCH}_{2} \mathrm{CH}_{3}$
  3. $\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{OH}$
  4. $\mathrm{CH}_{2}(\mathrm{OH}) \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{OH}$

Solution

Since 1 mole of compound $X$ reacts with $N a$ to evolve 1 mole of $H_{2}$ gas, therefore the compound should have 2 active hydrogen atoms per mole which is possible only in option $d$.
$\mathrm{CH}_{2} \mathrm{OHCH}_{2} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{OH}+2 \mathrm{Na} \longrightarrow \mathrm{NaOCH}_{2} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{ONa}+2 \mathrm{H}$ ,

Asked in: JEE-TOPICTESTS-CHEMISTRY

Practice more ALCOHOLS, PHENOLS AND ETHERS questions on Aicharya