WB JEE Medical WB JEE Medical Solved Paper-2007

  • question_answer
    Pure methane can be produced by

    A)  Wurtz reaction

    B)  Kolbes electrolytic method

    C)  soda lime decarboxylation

    D)  reduction with \[{{H}_{2}}\]

    Correct Answer: C

    Solution :

                     Methane cannot be produced by Wurtz  reaction, Kolbes electrolytic method and reduction with \[{{H}_{2}}\]because, it has one carbon atom. Pure methane can be produced by the decarboxylation of sodium acetate. \[C{{H}_{3}}COONa+\underset{\text{soda}\,\text{lime}}{\mathop{NaOH}}\,\xrightarrow{CaO}\underset{\text{metahane}}{\mathop{C{{H}_{4}}}}\,+N{{a}_{2}}C{{O}_{3}}\]


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