Skip to main content
Back

Benzene Reactions quiz

Control buttons has been changed to "navigation" mode.
1/15

Terms in this set (15)

  • Why does benzene undergo substitution reactions instead of addition reactions?
    Benzene undergoes substitution reactions to maintain its aromatic stability, which would be lost in addition reactions.
  • What is the main difference between benzene and other unsaturated hydrocarbons in terms of reactivity?
    Benzene prefers substitution reactions, while other unsaturated hydrocarbons typically undergo addition reactions.
  • What is halogenation of benzene?
    Halogenation is a reaction where a hydrogen atom on benzene is replaced by a halogen atom, such as bromine or chlorine.
  • What type of catalyst is required for benzene halogenation?
    A Lewis acid catalyst, such as iron tribromide (FeBr3) or iron trichloride (FeCl3), is required for halogenation.
  • What happens to the hydrogen atom during benzene halogenation?
    The hydrogen atom is substituted by a halogen atom, resulting in a halogenated benzene derivative.
  • What is the product called when benzene reacts with bromine in the presence of FeBr3?
    The product is bromobenzene, where a hydrogen atom is replaced by a bromine atom.
  • What is the product called when benzene reacts with chlorine in the presence of FeCl3?
    The product is chlorobenzene, where a hydrogen atom is replaced by a chlorine atom.
  • What is Friedel-Crafts alkylation?
    Friedel-Crafts alkylation is a reaction where an alkyl group replaces a hydrogen atom on benzene, using a Lewis acid catalyst.
  • Which catalysts are used in Friedel-Crafts alkylation?
    Aluminum chloride (AlCl3) or aluminum bromide (AlBr3) are used as Lewis acid catalysts in Friedel-Crafts alkylation.
  • What is the product when benzene undergoes Friedel-Crafts alkylation with a methyl group?
    The product is methylbenzene, commonly known as toluene.
  • Why must the Lewis acid catalyst match the halogen used in benzene halogenation?
    The catalyst must match the halogen to facilitate the reaction, e.g., FeBr3 for Br2 and FeCl3 for Cl2.
  • What is the scientific name and common name for methylbenzene?
    The scientific name is methylbenzene, and the common name is toluene.
  • What class of compounds does benzene belong to?
    Benzene belongs to the class of aromatic compounds.
  • What is the role of Lewis acids in benzene reactions?
    Lewis acids act as electron pair acceptors, helping to facilitate substitution reactions on benzene.
  • Name two other benzene reactions mentioned that are studied in advanced organic chemistry.
    Sulfonation and nitration are two other benzene reactions studied in organic chemistry.