Dissociation constant of phenol is:
Correct answer: D. 1.3 x 10^-10
- A. 1.2 x 10^-10
- B. 1.2 x 10^10
- C. 1.3 x 10^10
- D. 1.3 x 10^-10
Explanation
A is incorrect.B is incorrect.C is incorrect.D is correct as disassociation constant of phenol is 1.3 x10-10 (fact)
This question appeared on the UHS MDCAT 2010 paper, which you can sit online with every answer explained.
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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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