1.

In the nitration of benzene using a mixture of conc. H_2SO_4 and conc. HNO_3, the species which initiates the reaction is _______________ .

Answer»

`NO_2`
`NO^(+)`
`NO_(2)^(+)`
`NO_(2)^(-)`

SOLUTION :Nitration of benzene is an electrophilic SUBSTITUTION reaction. The electrophile which attacks the benzene ring in this reaction is NITRONIUM ion `(NO_(2)^(+)`).


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