Which of the following methods is used to prepare benzene from sodium benzoate?
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A.
Decarboxylation
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B.
Oxidation
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C.
Polymerisation
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D.
Hydrolysis
Correct Answer:
A. Decarboxylation
Explanation:
Benzene is synthesized from sodium benzoate through a process called decarboxylation. When sodium benzoate is heated with soda lime (a mixture of sodium hydroxide and calcium oxide), the carboxyl group is removed and released as sodium carbonate, leaving behind benzene. Calcium oxide is included in the mixture to keep the sodium hydroxide dry and prevent it from melting and damaging the glass container during the high-heat reaction.
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