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NCERT Class XII Chemistry
Chapter - Alcohols, Phenols and Ethers
Questions with Solutions

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Question : 41
Total: 45
Ortho and para nitrophenols are more acidic than phenol. Draw the resonance structures of the corresponding phenoxide ions.
Solution:  
The attachment of the –NO2 group to the phenol molecule at o- and p-positions decreases the electron density on oxygen atom. This causes the oxygen atom to pull the bond pair of electrons of the O – H bond towards itself thereby facilitating the release of H as H‌+ .
The resonance structures of the phenoxide ions are :
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