JIPMER Jipmer Medical Solved Paper-1996

  • question_answer
    The Kolbes synthesis of ethane involves :

    A)  electrophilic substitution

    B)  nucelophilic addition

    C)  free-radical addition

    D)  none of the above

    Correct Answer: C

    Solution :

    In Kolbes synthesis of ethane, potassium acetate is electrolysed. \[2C{{H}_{3}}COOK\xrightarrow{\text{electrolysis}}2C{{H}_{3}}CO{{O}^{-}}+2{{K}^{+}}\] At anode: \[2C{{H}_{3}}CO{{O}^{-}}\xrightarrow{{}}2C{{H}_{3}}CO\dot{O}+2{{e}^{-}}\xrightarrow{-C{{O}_{2}}}\] \[2\dot{C}{{H}_{3}}\xrightarrow{{}}\underset{(Ethane)}{\mathop{C{{H}_{3}}-C{{H}_{3}}}}\,\]


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