Electrophilic Substitution Reaction, Types, Mechanism, Questions (For CBSE, ICSE, IAS, NET, NRA 2022)

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Questions

What Are the Two Types of Electrophilic Substitution Reactions?

Answer:

The two primary types of electrophilic substitutions include electrophilic aliphatic substitution and electrophilic aromatic substitution.

What Catalysts Are Used in the Chlorination and Bromination of Aromatic Rings?

Answer:

  • For the chlorination of an aromatic ring, Lewis՚s acid catalysts such as or greatly increase the rate of the reaction.
  • This is because the Lewis acids form a complex with the chlorine molecule, liberating a highly electrophilic species.
  • When an aromatic ring must be brominated, catalysts such as or can be used instead.

What is Electrophilic Substitution Reaction with Example?

Answer:

Nitration and sulfonation of benzene are two examples of electrophilic aromatic substitution. The nitronium ion and sulfur trioxide are the electrophiles and individually react with benzene to give nitrobenzene and benzenesulfonic acid respectively.

What is the Difference between Electrophilic Substitution and Electrophilic Addition?

Answer:

  • This is distinct from “addition” reactions in which a species adds onto a molecule, but doesn՚t replace a leaving group.
  • Electrophilic substitutions involve displacement of a functional group by an electrophile. Electrophiles are species that are attracted to electrons.

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