Manipal Engineering Manipal Engineering Solved Paper-2008

  • question_answer
    Name the end product in the following series of reactions \[C{{H}_{3}}COOH\xrightarrow{N{{H}_{3}}}A\xrightarrow{Heat}B\xrightarrow[\Delta ]{{{P}_{4}}{{O}_{14}}}C\]

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

    B) \[C{{H}_{4}}\]

    C) \[C{{H}_{3}}COON{{H}_{4}}\]    

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

    Correct Answer: D

    Solution :

    \[C{{H}_{3}}COOH\xrightarrow{N{{H}_{3}}}C{{H}_{3}}\underset{(A)}{\mathop{-}}\,\overset{\begin{smallmatrix}  O \\  || \end{smallmatrix}}{\mathop{C}}\,-\overset{-}{\mathop{O}}\,\overset{\oplus }{\mathop{N}}\,{{H}_{4}}\]                 \[\xrightarrow[-{{H}_{2}}O]{Heat}C{{H}_{3}}\underset{\begin{smallmatrix}  (B) \\  acetamide \end{smallmatrix}}{\mathop{-}}\,\overset{\begin{smallmatrix}  O \\  || \end{smallmatrix}}{\mathop{C}}\,-N{{H}_{2}}\xrightarrow[\Delta ]{{{P}_{4}}{{O}_{10}}}\]                                                                                                                                 \[C{{H}_{3}}\underset{\begin{align}   & (C) \\  & acetonitrile \\  & or \\  & methyl\,\,cyanide \\ \end{align}}{\mathop{-}}\,C\equiv N\]


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