For the electrophilic substitution reaction sulphonation which of the following sequence regarding the rate of the reaction is true

For the electrophilic substitution reaction sulphonation which of the

1.	For the electrophilic substitution reaction sulphonation which of the following sequence regarding the rate of the reaction is true
Answer» `KC_(6)H_(6) gt KC_(6)D_(6) gt KC_(6)T_(6)` `KC_(6)H_(6) LT KCK_(6)D_(6) lt KC_(6)T_(6)` `KC_(6)H_(6) = KC_(6)D_(6) = KC_(6)T_(6)` `KC_(6)H_(6) gt KC_(6)D_(6) lt KC_(6)T_(6)` Solution :Sulphonation is reversible and EXHIBITS primary KINETIC isotopic effect.