Acetic acid on heating in presence of $\mathrm{P}_{2} \mathrm{O}_{5}$ gives

Acetic acid on heating in presence of $\mathrm{P}_{2} \mathrm{O}_{5}$ gives
  1. acetic anhydride
  2. acetylene
  3. peracid
  4. no reaction

Solution

$\mathrm{P}_{2} \mathrm{O}_{5}$ is a dehydrating agent and removes a molecule of water from two molecules of acetic acid
$\mathrm{CH}_{3} \mathrm{COOH}+\mathrm{HOOCCH}_{3} \stackrel{\mathrm{P}_{2} \mathrm{O}_{5}}{\longrightarrow} \mathrm{CH}_{3} \mathrm{COOCOCH}_{3}$ *

Asked in: JEE-TOPICTESTS-CHEMISTRY

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