wiz-icon
MyQuestionIcon
MyQuestionIcon
2
You visited us 2 times! Enjoying our articles? Unlock Full Access!
Question

What is the necessary condition for halogenation in benzene?


Open in App
Solution

Necessary conditions for halogenation in benzene:

  • Benzene reacts with halogens such as bromine/chlorine in an electrophilic substitution reaction only in the presence of a catalyst that is Ferric chloride FeCl3.
  • Iron is not a catalyst so it reacts with bromine or chlorine depending upon the reaction and leads to the formation of Ferric bromide FeBr3 or Ferric chloride FeCl3 respectively.
  • Iron is used as a catalyst in halogenation reactions as it is cheaper and readily available.

Halogenation reaction is depicted below:

  • Benzene reacts with halogens such as bromine/chlorine in an electrophilic substitution reaction only in the presence of a catalyst that is Ferric chloride FeCl3 it yields chlorobenzene and hydrochloric acid.
  • The chemical reaction for chlorination can be depicted as:

flag
Suggest Corrections
thumbs-up
1
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Synthesis of Aryl Halides
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon