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JEE Main & Advanced Chemistry Carboxylic Acids Question Bank General Introduction of Carboxylic Acids and Their Derivatives

  • question_answer
    Which is most reactive of the following                  [J & K 2005]

    A)                 Ethyl acetate     

    B)                 Acetic anhydride

    C)                 Acetamide         

    D)                 Acetyl chloride

    Correct Answer: D

    Solution :

               The order of reactivity of acid derivatives towards different reactions decreases in the order,                    \[RCOCl>{{(RCO)}_{2}}O>RCOO{R}'>RCON{{H}_{2}}\]            In other words, the reactivity decreases as the basicity of the leaving group increases i.e.,                 \[C{{l}^{-}}<RCO{{O}^{-}}<R{{O}^{-}}<NH_{2}^{-}\]


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