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 Consider the nitration of benzene using mixed conc. H2SO4 and HNO3 . If a large amount of KHSO4 is added to the mixture, the rate of nitration will be 

(a) unchanged

(b) doubled

(c) faster

(d) slower.

1 Answer

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Best answer

The correct option is: (d) slower.

Explanation:

Mechanism of nitration is :

If a large amount of KHSO4 is added then conc. of HSO4- ions increases and the reaction will be shifted in backward direction hence, the rate of nitration will be slower.

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