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RAJASTHAN ­ PET Rajasthan PET Solved Paper-2009

  • question_answer
    For the conversion of\[C{{H}_{2}}=C{{H}_{2}}\]into\[HOOC\]. \[C{{H}_{2}}C{{H}_{2}}COOH,\]the minimum number of steps required are

    A)  2              

    B)  3

    C)  4              

    D)  5

    Correct Answer: A

    Solution :

     \[\underset{C{{H}_{2}}}{\overset{C{{H}_{2}}}{\mathop{||}}}\,+\underset{cynogen}{\mathop{{{(CN)}_{2}}}}\,\xrightarrow[{}]{step-I}\underset{C{{H}_{2}}CN}{\overset{C{{H}_{2}}CN}{\mathop{|}}}\,\] \[\underset{C{{H}_{2}}CN}{\overset{C{{H}_{2}}CN}{\mathop{|}}}\,+{{H}_{3}}{{O}^{+}}\xrightarrow[{}]{step-II}\underset{C{{H}_{2}}.COOH}{\overset{C{{H}_{2}}.COOH}{\mathop{|}}}\,\]


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