1.

Which of the folliwng is the correct order of the order of the rate of reaction of C_(6)H_(6), C_(6)D_(6) and C_(6) T_(6) towards nitration?

Answer»

`C_(6) H_(6) gt C_(6) D_(6) gt C_(6) T_(6)`
`C_(6) H_(6) = C_(6) D_(6) =C_(6) T_(6)`
`C_(6) H_(6) gt C_(6) D_(6) = C_(6) T_(6)`
`C_(6)T_(6) gt C_(6) D_(6) gt C_(6) H_(6)`

Solution :SULPHONATION is a reversable process and shows `1^(@)` kinetic isotope effect, wheras other `SE` reactiosn (i.e. nitration halogation, etc.) do not show `1^(@)` kinetic isotope effect.


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