MHT CET Chemistry question

Chemistry Aldehydes, Ketones and Carboxylic Acids MHT CET

Which of the following reaction cannot be used for the preparation of acetyl chloride?

(A)\mathrm{CH_{3}COOH + HCl \rightarrow CH_{3}COCl + H_{2}O}Correct
(B)\mathrm{3CH_{3}COOH + PCl_{3} \rightarrow 3CH_{3}COCl + H_{3}PO_{3}}
(C)\mathrm{CH_{3}COOH + PCl_{5} \rightarrow CH_{3}COCl + POCl_{3} + HCl}
(D)\mathrm{CH_{3}COOH + SOCl_{2} \rightarrow CH_{3}COCl + SO_{2} + HCl}

Answer: (A)

Solution

The -OH group of the acid cannot be replaced by chloride with HCl alone (reaction does not proceed), whereas ,

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Question ID VK-081173