Why is the reactivity of haloarenes low in nucleophilic substitution reactions?

Solution

In haloarenes the lone pair of electron on halogen atom is delocalized on the benzene ring. Since aryl halides are stabilizes by resonance hence the energy of acitvation for displacement of halogen form aryl halides is much greater than alkyl halides thus they not under go nucleophillic substiution reaction.

Some More Questions From Haloalkanes and Haloarenes Chapter

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Haloalkanes And Haloarenes

Why is the reactivity of haloarenes low in nucleophilic substitution reactions?

Some More Questions From Haloalkanes and Haloarenes Chapter

Among the isomeric alkanes of molecular formula C₅H₁₂, identify the one that on photochemical chlorination yields:
Four isomeric monochlorides.

Draw the structures of major monohalo products in each of the following reactions:

Draw the structures of major monohalo products in each of the following reactions:

Draw the structures of major monohalo products in each of the following reactions:

Draw the structures of major monohalo products in each of the following reactions:

Draw the structures of major monohalo products in each of the following reactions:

Arrange each set of compounds in order of increasing boiling points:
Bromomethane, Bromoform, Chloro-methane, Dibromomethane.

Arrange each set of compounds in order of increasing boiling points:
1-chloropropane, Isopropyl chloride, 1-chlorobutane.

Arrange each set of compounds in order of increasing boiling points:

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Haloalkanes And Haloarenes

Why is the reactivity of haloarenes low in nucleophilic substitution reactions?

Some More Questions From Haloalkanes and Haloarenes Chapter

Among the isomeric alkanes of molecular formula C5H12, identify the one that on photochemical chlorination yields:Four isomeric monochlorides.

Draw the structures of major monohalo products in each of the following reactions:

Draw the structures of major monohalo products in each of the following reactions:

Draw the structures of major monohalo products in each of the following reactions:

Draw the structures of major monohalo products in each of the following reactions:

Draw the structures of major monohalo products in each of the following reactions:

Arrange each set of compounds in order of increasing boiling points:Bromomethane, Bromoform, Chloro-methane, Dibromomethane.

Arrange each set of compounds in order of increasing boiling points:1-chloropropane, Isopropyl chloride, 1-chlorobutane.

Arrange each set of compounds in order of increasing boiling points:

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

Among the isomeric alkanes of molecular formula C₅H₁₂, identify the one that on photochemical chlorination yields:
Four isomeric monochlorides.

Arrange each set of compounds in order of increasing boiling points:
Bromomethane, Bromoform, Chloro-methane, Dibromomethane.

Arrange each set of compounds in order of increasing boiling points:
1-chloropropane, Isopropyl chloride, 1-chlorobutane.