COMEDK · Chemistry · 13. General Organic Chemistry
The ionisation constant of phenol is more than that of ethanol because
- A phenoxide ion is a stronger base than ethoxide ion
- B phenoxide ion is stabilised by resonance
- C ethoxide ion is stabilised by resonance
- D phenoxide ion is aromatic while ethoxide ion is aliphatic
Answer & Solution
Correct Answer
(B) phenoxide ion is stabilised by resonance
Step-by-step Solution
Detailed explanation
Ionisation constant \(\left(K_{a}\right)\) of phenol is more than that of ethanol because phenol is more acidic than alcohol. On ionisation, phenol gives phenoxide ion which is stabilised due to resonance.
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