Benzene and Alkyl Benzene - Result Question 47

####51. Arrange the following in increasing order of reactivity towards sulphonation with fuming sulphuric acid.

Benzene, toluene, methoxy benzene, chlorobenzene.

(1988, 1M)

Show Answer

Solution:

  1. Both CH3 and OCH3 are activating groups but chloro is deactivating group in electrophilic aromatic substitution reaction.

Also OCH3 activate more than CH3 due to resonance effect by the former group. Therefore, the overall order of reactivity is:

Chlorobenzene < benzene < toluene < methoxy benzene



NCERT Chapter Video Solution

Dual Pane