Questions
Which of the following species parricipates in sulphonation of benzene ring?
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By Expert Faculty of Sri Chaitanya
a
SO2−
b
SO3
c
HSO3−
d
H2SO4
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Correct option is B
Sulphur trioxide SO3 is active species in sulfonation of benzene.SO3 acts as an electrophile and accepts a pair of pi electrons from benzene.
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