For halogenation of benzene, which reagent is used:
Correct answer: B. AlCl3
- A. H2SO4
- B. AlCl3
- C. HNO3
- D. HCl
Explanation
In the halogenation of benzene, AlCl3 is used as a catalyst to make the halogen into a strong electrophile. This allows the halogen to attack the electron cloud on the benzene ring and react with it. The correct answer is AlCl3. Options A, C, and D are incorrect because they do not facilitate the formation of a strong electrophile needed for the reaction to occur.
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About Chemistry of Hydrocarbons
Hydrocarbons are studied through the structures and reactions of alkanes, alkenes, alkynes and aromatic compounds. Coverage includes free radical substitution in alkanes, electrophilic addition to carbon-carbon multiple bonds, benzene substitution, aromatic stability and the difference between addition reactions of alkenes and substitution reactions of benzene.
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