RAJASTHAN PMT Rajasthan - PMT Solved Paper-2009

  • question_answer
    \[{{C}_{2}}{{H}_{5}}OH\xrightarrow[NaOH]{{{I}_{2}}}A\xrightarrow[KOH]{Aqueous}B\] In equation given above \[A\] and \[B\] are respectively

    A) \[CH{{I}_{3}}\]and\[HCOOK\]

    B)        \[CH{{I}_{3}}\]and\[C{{H}_{3}}COOK\]

    C)        \[C{{H}_{4}}\]and\[HCOOK\]

    D)        \[CH{{I}_{3}}\]and\[{{H}_{2}}\]

    Correct Answer: A

    Solution :

    \[{{C}_{2}}{{H}_{5}}OH+4{{I}_{2}}+6NaOH\xrightarrow{{}}\underset{Iodoform}{\mathop{CH{{I}_{3}}}}\,\] \[+HCOONa+5NaI+5{{H}_{2}}O\] \[CH{{I}_{3}}+3KOH\xrightarrow{{}}\left[ H-\underset{\begin{smallmatrix}  | \\  OH \end{smallmatrix}}{\overset{\begin{smallmatrix}  OH \\  | \end{smallmatrix}}{\mathop{C}}}\,-OH \right]\xrightarrow{{{H}_{2}}O}\]                                                 \[H-\overset{\begin{smallmatrix}  O \\  || \end{smallmatrix}}{\mathop{C}}\,-OH\] \[H-\overset{\begin{smallmatrix}  O \\  || \end{smallmatrix}}{\mathop{C}}\,-OH+KOH\xrightarrow{{}}H-\overset{\begin{smallmatrix}  O \\  || \end{smallmatrix}}{\mathop{C}}\,-OK+{{H}_{2}}O\]


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