A) \[NO_{2}^{+}\]
B) \[N{{O}_{3}}\]
C) \[N{{O}_{2}}\]
D) all of these
Correct Answer: A
Solution :
Nitration takes place in presence of \[{{\text{H}}_{\text{2}}}\text{S}{{\text{O}}_{\text{4}}}\]\[\text{HN}{{\text{O}}_{\text{3}}}\text{.HN}{{\text{O}}_{\text{3}}}\] and \[{{\text{H}}_{\text{2}}}\text{S}{{\text{O}}_{\text{4}}}\]react together to form\[\text{N}{{\overset{+}{\mathop{\text{O}}}\,}_{2}}.\] The \[\overset{\text{+}}{\mathop{\text{N}}}\,{{\text{O}}_{\text{2}}}\]is nitrating agent. \[HN{{O}_{3}}+2{{H}_{2}}S{{O}_{4}}\xrightarrow{{}}{{H}_{3}}\overset{+}{\mathop{O}}\,+2HS{{O}_{4}}^{-}\] \[\underset{\text{nitronium}\,\,\text{ion}}{\mathop{+NO_{2}^{+}}}\,\]
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