JEE Main & Advanced Chemistry Carboxylic Acids Question Bank Critical Thinking Carboxylic Acids

  • question_answer
    How will you convert butan-2-one to propanoic acid [IIT-JEE (Screening) 2005]

    A) Tollen's reagent              

    B) Fehling's solution

    C) \[NaOH/{{I}_{2}}/{{H}^{+}}\]      

    D) \[NaOH/NaI/{{H}^{+}}\]

    Correct Answer: C

    Solution :

    \[\underset{\underset{\,\,\,O}{\mathop{\,\,\,\,|\ |}}\,}{\mathop{{{C}_{2}}{{H}_{5}}-C-C{{H}_{3}}}}\,+{{I}_{2}}+NaOH\to {{C}_{2}}{{H}_{5}}CO_{2}^{-}N{{a}^{+}}+CH{{I}_{3}}\] \[{{C}_{2}}{{H}_{5}}CO_{2}^{-}N{{a}^{+}}\xrightarrow{{{H}^{+}}}{{C}_{2}}{{H}_{5}}COOH+N{{a}^{+}}\]


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