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J & K CET Engineering J and K - CET Engineering Solved Paper-2013

  • question_answer
    When ethanol and\[{{\text{I}}_{\text{2}}}\]are heated in the presence of\[\text{N}{{\text{a}}_{\text{2}}}\text{C}{{\text{O}}_{\text{3}}}\text{,}\]the yellow crystals obtained are of

    A)  \[{{C}_{2}}{{H}_{5}}l\]

    B) \[C{{H}_{3}}l\]

    C)  \[CH{{l}_{3}}\]

    D) \[C{{H}_{2}}{{l}_{2}}\]

    Correct Answer: C

    Solution :

     Formation of iodoform takes place. \[C{{H}_{3}}C{{H}_{2}}OH+{{l}_{2}}\xrightarrow{\text{Oxidation}}C{{H}_{3}}CHO\xrightarrow{{{I}_{2}}/O{{H}^{-}}}\] \[C{{l}_{3}}CHO\xrightarrow{O{{H}^{-}}}CH{{l}_{3}}+HCO{{O}^{-}}\]


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