JEE Main & Advanced Chemistry Hydrocarbons Question Bank Aromatic Hydrocarbon

  • question_answer
    Attacking or reactive or electrophilic species in nitration of benzene is or In the nitration of benzene with concentrated \[HN{{O}_{3}}\text{ and }{{H}_{2}}S{{O}_{4}}\] the attack on ring is made by [CBSE PMT 1994; MP PET 1996, 2000; Pb. PMT 1998; BHU 2001; BVP 2004; DCE 2003]

    A) \[NO_{2}^{-}\]

    B) \[NO_{2}^{+}\]

    C) \[NO_{3}^{-}\]

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

    Correct Answer: B

    Solution :

    \[HO-N{{O}_{2}}+{{H}^{+}}HS{{O}_{4}}^{-}\to \]\[{{H}_{2}}O+\underset{\begin{smallmatrix}  \,\,\,\text{Nitronium}\,\text{ion} \\  \text{(attacking species)} \end{smallmatrix}}{\mathop{N{{O}_{2}}^{+}+HS{{O}_{4}}^{-}}}\,\]


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