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Question

In the nitration of benzene with a mixture of concentrated HNO3 and concentrated H2SO4 the active species involved is :

A
NO3
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B
NO2
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C
NO2
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D
NO+2
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Solution

The correct option is D NO+2
In the nitration of benzene with a mixture of concentrated HNO3 and concentrated H2SO4 the active species involved is the nitronium ion NO+2. It is electrophile and obtained during the reaction of nitric acid and sulphuric acid.
HONO2+2H2SO4NO+2+H3O++2HSO4

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