Question

why is chlorobenzene less reactive than benzene in electrophilic substitution reaction?​

Answer 1

Chlorine is more electronegative than hydrogen. It draws electrons in the ring towards itself. So, it reduces the electron density of the aromatic ring of the ring. Hence, chlorobenzene is less reaction than benzene in electrophilic substitution reaction.

Explanation:

• Electrophilic substitution reaction happens in the reactions of compounds containing benzene rings.

• In this reaction, an electrophile displaces a functional group in a compound.

• In electrophilic substitution reaction of benzene involves the attraction of electrophile towards the delocalized electrons in the benzene ring.

• Examples for this type of reactions are sulfonation, halogenation and nitration. Electrophiles are electron pair acceptor that are positively charged or neutral species. Chlorobenzene is ortho para deactivator.

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