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JEE Main levelSingle correct optionDifficulty 2 of 3co193

Ethanoic acid reacts with phosphorus pentachloride. Which set lists all the products?

A $CH X_{3} COCl$ , $PCl X_{3}$ and $H X_{2} O$
B $CH X_{3} COCl$ , $POCl X_{3}$ and $HCl$
C $CH X_{3} COCl$ , $H X_{3} PO X_{4}$ and $HCl$
D $CH X_{3} CHCl X_{2}$ , $POCl X_{3}$ and $H X_{2} O$

Answer: B

CH X_{3} COOH + PCl X_{5} CH X_{3} COCl + POCl X_{3} + HCl

. The hydroxyl group is replaced by chlorine and the phosphorus byproduct is phosphoryl chloride.

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