The electrophile in aromatic sulphonation is:
Correct answer: C. SO+3
- A. H2SO4
- B. HSO4
- C. SO+3
- D. SO3
Explanation
Sulfur trioxide or its protonated derivative is the actual electrophile in this electrophilic aromatic substitution.
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About Benzene and Aromatic Compounds
Benzene has a planar ring of delocalised π electrons, giving aromatic stability and equal carbon-carbon bond lengths. The topic covers resonance, electrophilic substitution reactions such as nitration, halogenation, sulphonation and Friedel-Crafts reactions, along with substituent effects and the distinction between substitution in benzene and addition in ordinary alkenes.
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