What is the major product of the reaction between benzene and chlorine in the presence of iron(III) chloride?
Correct: A
The reaction between benzene and chlorine in the presence of iron(III) chloride is an example of an electrophilic aromatic substitution reaction. The iron(III) chloride acts as a catalyst, generating a chlorine cation which then attacks the benzene ring. The major product of this reaction is chlorobenzene, with the chlorine substituting for one of the hydrogen atoms on the benzene ring.