Heating phenol with Zn will yield_________________?
Correct answer: A. Benzene
- A. Benzene
- B. Benzoic acid
- C. Phenoxide
- D. Cyclohexane
Explanation
Zinc removes the oxygen-containing hydroxyl group from phenol during heating, reducing phenol to benzene: C6H5OH + Zn produces C6H6 + ZnO. Cyclohexane would require hydrogenation of the aromatic ring, not reduction with zinc.
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About Phenols
Phenols contain a hydroxyl group directly bonded to an aromatic ring, making them more acidic than alcohols because the phenoxide ion is resonance-stabilised. Reactions include ionisation with bases, electrophilic substitution, bromination, nitration and oxidation, with attention to the difference between phenols and aliphatic alcohols.
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