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  4. The given reaction CH3COOH+Cl2 oversetP arrow ClCH2COOH+HCl is known as

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Q. The given reaction
$CH_{3}COOH+Cl_{2}\overset{P}{ \rightarrow }ClCH_{2}COOH+HCl$
is known as

NTA AbhyasNTA Abhyas 2022

Solution:

In Hell-Volhard-Zelinsky reaction, the carboxylic acid containing $\text{α-H}$ undergo alpha halogenation in the presence of $\text{Cl}_{\text{2}}$ in red $\text{P}$ . In this reaction $\text{α-H}$ is replaced by chlorine.