Question

In the nitration of benzene using a mixture of conc. H₂SO₄ and conc. HNO₃, the species which initiates the reaction is ............ .
(a) NO₂
(b) NO⁺
(c) $NO_2^+$
(d) $NO_2^-$

Answer 1

Benzene is formed in the nitration process of benzene using concentrated H₂SO₄ and HNO₃. The reaction is given by;

HNO₃ + H₂SO₄ ⇄ NO₂^(+) +HSO₄^(-) + H₂O

If a large amount of KHSO₄ is added to the mixture, more HSO₄^(-) ion furnishes and rate of electrophilic aromatic reaction tends to slow down which means that concentration of electrophile decreased.

Hence addition of a large amount of KHSO₄ is added to the mixture, the nitration rate tends to slow down.

please mark as brainily

Answer 2

the right answer :- (a) NO2