The OH group of an alcohol or the -COOH group | vedclass

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Question

(C) The reaction of alcohols and carboxylic acids with $PCl_5$ (phosphorus pentachloride) results in the substitution of the hydroxyl group $(-OH)$ or

Vedclass · Accepted Answer

Phosphorus pentachloride

Vedclass · Answer

(C) The reaction of alcohols and carboxylic acids with $PCl_5$ (phosphorus pentachloride) results in the substitution of the hydroxyl group $(-OH)$ or the carboxyl group $(-COOH)$ with a chlorine atom $(-Cl)$.For alcohols: $R-OH + PCl_5 	o R-Cl + POCl_3 + HCl$For carboxylic acids: $R-COOH + PCl_5 	o R-COCl + POCl_3 + HCl$Therefore,the correct reagent is phosphorus pentachloride.

The $OH$ group of an alcohol or the $-COOH$ group of a carboxylic acid can be replaced by $-Cl$ using:

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