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Question
Among the following statements on the nitration of aromatic compounds, the false statement is:
Options
The rate of nitration of benzene is almost the same as that of hexadeuterobenzene.
The rate of nitration of toluene is greater than that of benzene.
The rate of nitration of benzene is greater than that of hexadeuterobenzene.
Nitration is an electrophilic substitution reaction.
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Solution
The rate of nitration of benzene is greater than that of hexadeuterobenzene.
Explanation:
The bonding of the electrophile to the aromatic ring without cleavage of the C – H or C – O bond determines the rate of the electrophilic substitution reaction.
The last step (second step) that restores the stable aromatic system breaks this bond. As a result, the rate of nitration of benzene is nearly identical to that of deuterobenzene.
