Benzene is prepared in the laboratory from sodium benzoate in the presence of:
Correct answer: C. NaOH +Cao
- A. Dil:NaOH
- B. Alc: KOH
- C. NaOH +Cao
- D. Na/Ether
Explanation
Benzene is prepared in the laboratory by the decarboxylation of sodium benzoate in the presence of sodium hydroxide and calcium oxide (a process called soda lime decarboxylation). In this reaction, sodium benzoate is heated with soda lime, resulting in the formation of benzene and sodium carbonate. The calcium oxide serves as a dehydrating agent, while sodium hydroxide facilitates the decarboxylation process.
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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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