The OH group of an alcohol or the -COOH group of a carboxylic acid can be replaced by -Cl using
A
Phosphorus pentachloride
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B
Hypochlorous acid
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C
Chlorine
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D
Hydrochloric acid
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Solution
The correct option is A Phosphorus pentachloride The acyl chlorides may be generated from carboxylic acids by heating them with phosphorus trichloride or phosphorus pentachloride.