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Dinesh khalmaniya 1 Best Answer
sulphonation takes place in presence of H2SO4. here electrophile is SO3
this is for phenol what about benzenr
dono k liye electrophile to same hi hoga na
check this
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dono possible he pr yha SO3H pe + charge ayega
actually electrophile to SO3 hi he pr H2SO4 so H+ accept kr skta he so SO3 and SO3H+ dono use kr skte he dono hi correct he