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

  • question_answer
    \[{{C}_{2}}{{H}_{2}}\underset{{{H}_{2}}S{{O}_{4}}}{\mathop{\xrightarrow{HgOH\,\,1%}}}\,A\xrightarrow{[O]}B\], B is [CBSE PMT 1991; BHU 1995]

    A)                 An acid

    B)                 An aldehyde

    C)                 A ketone            

    D)                 Ethanol

    Correct Answer: A

    Solution :

               \[CH\equiv CH\underset{{{H}_{2}}S{{O}_{4}}}{\mathop{\xrightarrow{1%H{{g}^{+2}}}}}\,\underset{\text{Unstable}}{\mathop{C{{H}_{3}}-CH\,<\,\begin{matrix}    OH  \\    OH  \\ \end{matrix}}}\,\]\[\to C{{H}_{3}}CHO\xrightarrow{[O]}\underset{\text{acetic}\,\,\,\text{acid}}{\mathop{C{{H}_{3}}COOH}}\,\]


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