What is obtained, when acetic acid is heated with chlorine in presence of red phosphorus?

Question

What is obtained, when acetic acid is heated with chlorine in presence of red phosphorus? (A) Acetyl chloride (B)  α -chloro acetic acid (C) Acetic anhydride (D) Chloral

Tardigrade Admin · Accepted Answer

In presence of red phosphorus, acids having a-hydrogen atom give a-substituted acids. This reaction is called Hell-Vollhard Zeiinsky

(H V Z)

reaction.

C H_{3} COO H + C l_{2} Red P α -chloro acetic acid C ∣ C l H_{2} COO H

Q. What is obtained, when acetic acid is heated with chlorine in presence of red phosphorus?

Acetyl chloride

$α$ -chloro acetic acid

Acetic anhydride

Chloral

In presence of red phosphorus, acids having a-hydrogen atom give a-substituted acids. This reaction is called Hell-Vollhard Zeiinsky $(H V Z)$ reaction.
$C H_{3} COO H + C l_{2} Red P α -chloro acetic acid C ∣ C l H_{2} COO H$