Answer the following questions: What is the electrophile in the sulphonation reaction of benzene? And how is it obtained?
(N/A) The electrophile in the sulphonation of benzene is sulphur trioxide $(SO_3)$.
It is obtained by the reaction of concentrated sulphuric acid $(H_2SO_4)$ as follows:
$2H_2SO_4 \rightleftharpoons H_3O^{+} + HSO_4^{-} + SO_3$
It is obtained by the reaction of concentrated sulphuric acid $(H_2SO_4)$ as follows:
$2H_2SO_4 \rightleftharpoons H_3O^{+} + HSO_4^{-} + SO_3$
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