JEE Main Chemistry question

In the reaction, C₆H₅COOH + CH₃*OH --H⁺--> Ester + water (isotopically labelled oxygen, O¹⁸, present in the alcohol's oxygen)

(A)Isotopically labelled oxygen (O¹⁸) is present in water
(B)O¹⁸ is present with esterCorrect
(C)O¹⁸ shifts from acid to alcohol
(D)No reaction takes place

Answer: (B)

Solution

Fischer esterification mechanistically proceeds via acyl–oxygen cleavage: the alcohol's oxygen attacks the carbonyl carbon and is retained in the ester product, while the

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Question ID VK-149497