CMC Medical CMC-Medical VELLORE Solved Paper-2009

  • question_answer
    Methyl alcohol when reacted with carbon monoxide using cobalt or rhodium as catalyst, compound A is formed. On heating A with HI in the presence of red phosphorus as catalyst B is formed. Identify B.

    A)  \[C{{H}_{3}}COOH\]                      

    B)  \[C{{H}_{3}}\cdot CHO\]

    C)  \[C{{H}_{3}}\cdot C{{H}_{2}}\cdot I\]    

    D)  \[C{{H}_{3}}\cdot C{{H}_{3}}\]

    Correct Answer: D

    Solution :

    \[\underset{methyl\,\,alcohol}{\mathop{C{{H}_{3}}OH}}\,+CO\xrightarrow{Rh\,catalyst}\underset{acetic\,\,acid}{\mathop{\underset{(A)}{\mathop{C{{H}_{3}}COOH}}\,}}\,\]\[\xrightarrow[red\,\,P]{HI+}\underset{ethane}{\mathop{\underset{(B)}{\mathop{C{{H}_{3}}-C{{H}_{3}}}}\,}}\,\]


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