ChemistryCode 9701

Halogen compounds

What this topic asks you to be able to do

  • recall the routes that turn an arene into a halogenoarene through substitution, using Cl₂ or Br₂ together with a catalyst of AlCl₃ or AlBr₃, shown by benzene forming chlorobenzene and methylbenzene forming 2-chloromethylbenzene and 4-chloromethylbenzene
  • account for why a halogenoalkane and a halogenoarene react differently, using chloroethane and chlorobenzene as the illustrative pair