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

  • question_answer
    The compound \[X,\] in the reaction, is                 \[X\xrightarrow{C{{H}_{3}}MgI}Y\xrightarrow{hydrolysis}Mg(OH)I+C{{H}_{3}}COOH\]                 [Pb. CET 2003]

    A)                 \[C{{H}_{3}}CHO\]          

    B)                 \[C{{O}_{2}}\]

    C)                 \[{{(C{{H}_{3}})}_{2}}CO\]           

    D)                 \[HCHO\]

    Correct Answer: B

    Solution :

               \[C{{O}_{2}}\] adds to Grignard?s reagent to yield acids.            \[C{{O}_{2}}\xrightarrow{C{{H}_{3}}Mg\,I}C{{H}_{3}}COOMg\,I\xrightarrow{H.\ OH}C{{H}_{3}}COOH\]\[+Mg<\begin{matrix}    OH  \\    I  \\ \end{matrix}\]


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