Correct statement about this reaction is/are

1.	Correct statement about this reaction is/are
Answer» The reaction is completely reversible It SHOWS primary kinetic ISOTOPIC effect The electrophil involved in the reaction is `SO_(3)` The electrophile involved in the reactio is `SO_(3)H^(o+)` SOLUTION :Sulphonation of BENZENE is completely reversible the electrophile is `SO_(3)` and reaction exhibits primary kinetic isotopic effect.

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