Which type of catalyst is used during electrophilic substitution reactions of benzene?
Correct answer: B. Lewis's acid
- A. Amphoteric
- B. Lewis's acid
- C. Lewis's base
- D. Transition metals
Explanation
A Lewis acid is defined as a substance that can accept an electron pair to form a covalent bond. This definition expands the concept of acids beyond the traditional Arrhenius and Brønsted-Lowry definitions, which focus on proton donation.Lewis acids are often used as catalysts in electrophilic aromatic substitution (EAS) reactions involving benzene and its derivatives. In these reactions, a Lewis acid facilitates the generation of a more reactive electrophile, allowing it to effectively react with the benzene ring
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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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