Which of the following is the active species in the nitration of aromatic organic compounds ?

Options

A. `NO_(3)^(-)`
B. `NO_(2)^(+)`
C. `NO^(+)`
D. `NO_(2)^(-)`

Answer

2

Explanation

when nitric acid is mixed with concentrated sulphuric acid,the nitronium ion `NO_(2)^(+)` is formed. This is the active species in the nitration of aromatic organic compounds.
`HNO_(3)overset(+H^(+))underset(-H_(2)O)(rarr)NO_(2)^(+)`
This is the important step in making explosives ,or the nitro compounds may be reduced to aniline and used for making dyestuffs.