BCECE Medical BCECE Medical Solved Papers-2004

  • question_answer
    X compounds reacts with Na to give\[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}C{{H}_{3}}\] , then compound X is :

    A)  \[C{{H}_{3}}C{{H}_{2}}OH\]

    B)  \[C{{H}_{3}}C{{H}_{2}}-Cl\]

    C)  \[C{{H}_{3}}-C{{H}_{3}}\]

    D)  \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}C{{H}_{2}}OH\]

    Correct Answer: B

    Solution :

    Key Idea: This is Wurtz reaction. In this reaction two molecules of alkyl halide react with each other to form alkane having double the number of carbon atoms. \[\underset{\begin{smallmatrix}  (X) \\  eihyl\,\,chloride \end{smallmatrix}}{\mathop{2\,C{{H}_{3}}C{{H}_{2}}Cl+}}\,2Na\xrightarrow{{}}\] \[\underset{butane}{\mathop{C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}C{{H}_{3}}}}\,+2NaCl\]


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