Nitrobenzene may be prepared by reacting benzene with a mixture of conc. H2SO4 and conc. HNO3 at 55°C. Which of the following best explains the role of conc. H2SO4?
Correct answer: C. It is protonating nitric acid
- A. It removes water
- B. It form stable complex with benzene
- C. It is protonating nitric acid
- D. It acts as a solvent
Explanation
The correct answer is Option C: It is protonating nitric acid. Concentrated sulfuric acid plays a crucial role in protonating nitric acid, which leads to the formation of a nitronium ion that reacts with benzene to yield nitrobenzene. The other options are incorrect as they do not accurately describe the function of concentrated sulfuric acid in this reaction.
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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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