Asked in UHS MDCAT 2017 2017Moderate

The reaction of bromine with benzene in the presence of FeBr3 follows the mechanism of:

Correct answer: B. Electrophilic substitution

  • A. Electrophilic addition
  • B. Electrophilic substitution
  • C. Nucleophilic substitution
  • D. Nucleophilic addition

Explanation

Benzene has an extended delocalised pi system above and below the ring which makes it highly attracted to electron-deficient species, which is why it readily undergoes electrophilic substitution.electrophilic substitution because an electrophile (H+) is being substituted from the reactant (benzene ring).

Last updated

About Benzene and Aromatic Compounds

Benzene has a planar ring of delocalised π electrons, giving aromatic stability and equal carbon-carbon bond lengths. The topic covers resonance, electrophilic substitution reactions such as nitration, halogenation, sulphonation and Friedel-Crafts reactions, along with substituent effects and the distinction between substitution in benzene and addition in ordinary alkenes.

Practise Chemistry of Hydrocarbons

1,091 free Chemistry of Hydrocarbons MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.

Exams that ask Chemistry questions like this

Chemistry is on 12 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.

Related questions