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JEE Main
Exam
JEE Main
Subject
Chemistry
Chapter
Carboxylic Acid Derivatives

JEE Main · Chemistry · Carboxylic Acid Derivatives

Corrosive sublimate (HgCl_ 2 ) can be used to distinguish between

Corrosive sublimate (HgCl2)\left(\mathrm{HgCl}_{2}\right) can be used to distinguish between

Options

  1. Aformic acid and acetic acid
  2. Bacetaldehyde and butanone
  3. Cformaldehyde and propanone
  4. DAll of the above

Correct answer

A. formic acid and acetic acid

Step-by-step solution

Corrosive sublimate gives black ppt of calomel with formic acid but it does not react with acetic acid. 2 HCOOH+\mathrm{HCOOH}+2 HgCl2⟶Hg2Cl2+CO2+H2OCH3COOH+HgCl2⟶\mathrm{HgCl}_{2} \longrightarrow \mathrm{Hg}_{2} \mathrm{Cl}_{2}+\mathrm{CO}_{2}+\mathrm{H}_{2} \mathrm{O} \mathrm{CH}_{3} \mathrm{COOH}+\mathrm{HgCl}_{2} \longrightarrow No reaction
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