Punjab Medical Punjab - MET Solved Paper-2004

  • question_answer
    The nitration of a compound is due to the:

    A) \[N{{O}_{2}}\]                                  

    B) \[N{{O}_{3}}\]

    C) \[NO\]                                 

    D) \[{{N}^{+}}{{O}_{2}}\]

    Correct Answer: D

    Solution :

    The process of nitration takes place as below:- \[\underset{(HN{{O}_{3}})}{\mathop{HON{{O}_{2}}}}\,+2{{H}_{2}}S{{O}_{4}}\overset{+}{\mathop{{{H}_{3}}O}}\,+\overset{-}{\mathop{2HS{{O}_{4}}}}\,\]     \[\underset{nitronium\,\,ion}{\overset{+}{\mathop{+N{{O}_{2}}}}}\,\] The electrophile responsible for nitration is \[\overset{+}{\mathop{N{{O}_{2}}}}\,\]ion.


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