Which of the following are necessary conditio | vedclass

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(B) The electrophilic aromatic substitution (halogenation) of benzene requires the presence of a Lewis acid catalyst,which acts as a halogen carrier.$

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Presence of a halogen carrier

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(B) The electrophilic aromatic substitution (halogenation) of benzene requires the presence of a Lewis acid catalyst,which acts as a halogen carrier.$1.$ $A$ halogen carrier like $FeCl_3$ or $AlCl_3$ is necessary to polarize the halogen molecule $(X_2)$ to generate the electrophile $(X^+)$.$2.$ The reaction is typically carried out in the dark to prevent free-radical substitution,which would otherwise occur at the side chain (benzylic position) in the presence of light.$3.$ Therefore,the reaction conditions for electrophilic aromatic halogenation are the presence of a halogen carrier and the absence of light (dark conditions).

Which of the following are necessary conditions for the electrophilic aromatic halogenation of benzene?

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