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

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

BVP MedicalBVP Medical 2004

Solution:

In presence of red phosphorus, acids give a-substituted acids, on heating. It is called Hell-Volhard Zclinsky reaction (HVZ). $ \underset{\alpha -chloro\,acrtic\,acid}{\mathop{C{{H}_{3}}COOH\xrightarrow[\operatorname{Re}d.P]{C{{l}_{2}}}\overset{Cl}{\mathop{\overset{|}{\mathop{C{{H}_{2}}}}\,}}\,-COOH}}\, $