Identify the rate-determining step in the electrophilic aromatic substitution of benzene.
Formation of an electrophile.
Formation of a sigma complex.
Loss of a proton from the sigma complex.
Addition of an electrophile & loss of a proton.
None of these.

A sigma complex is formed as the first step in the electrophilic aromatic substitution of benzene. The formation of this intermediate is the rate determining step. This intermediate is stabilized by resonance. In a second fast step, a proton is eliminated forming a substituted benzene. The slow step which is the formation of the sigma complex is the rate determining step of the reaction.

Identify the rate-determining step in the electrophilic aromatic substitution of benzene. Formation of an electrophile. Formation of a sigma complex. Loss of a proton from the sigma complex. Addition of an electrophile & loss of a proton. None of these.

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Identify the rate-determining step in the electrophilic aromatic substitution of benzene.
Formation of an electrophile.
Formation of a sigma complex.
Loss of a proton from the sigma complex.
Addition of an electrophile & loss of a proton.
None of these.