Chlorobenzene is formed by reaction of chlorine with benzene in the presence of .Which of the following species attacks the benzene ring in this reaction?

(i) Cl−

(ii) Cl+

(iii) AlCl₃

(iv) [AlCl₄]−

<p><span data-teams="true">This is a multiple choice answer as classified in NCERT Exemplar</span></p><p>The correct answer is option ii.</p><p>Aluminum chloride is a Lewis acid catalyst that functions similarly to FeCl₃. By chlorinating benzene in the presence of AlCl₃, benzene is transformed to chlorobenzene. Electrophilic substitution is used to carry out the reaction. Cl₂ forms a coordination complex with AlCl₃ called Cl&nbsp;+&nbsp;AlCl₄^-&nbsp;, which has a small positive charge on Cl and is negatively charged on AlCl₄^-&nbsp;. This Cl⁺&nbsp; then interacts with the benzene ring's aromatic double bond to generate an addition product, followed by deprotonation to produce chlorobenzene, AlCl₃, and HCl as side products. The best choice is (ii).</p>

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