Q. Corrosive sublimate $(HgCI_{2})$ can be used to distinguish between
A) Formic acid and acetic acid
B) Acetaldehyde and butanone
C) Formaldehyde and propanone
D) All of the above
Explanation
(a)
Corrosive sublimate gives black ppt. of calomel with formic acid but it does not react with acetic acid.
$2HCOOH + 2{HgCl}_{2}\ \longrightarrow {Hg}_{2}{Cl}_{2} + {CO}_{2} + H_{2}O$
${CH}_{3}COOH + \ {HgCl}_{2}\ \longrightarrow No\ reaction$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.