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Posted by Anjani Kumar 5 years, 1 month ago
- 2 answers
Yogita Ingle 5 years, 1 month ago
The acidic strength of phenols is affected by the presence of substituents on the ring.
An electron-withdrawing group increases the acidic strength by greater dispersal of the negative charge on the phenoxide ion by inductive effect (-I) or by resonance (-R) effect.
An electron-donating group decreases the acidic strength due to (+I) or (+R) or both.
Halogens have +R and -I effects, but the -I effect is more dominant.
Therefore, all halophenols are more acidic(except p-fluorophenol) than phenol itself.
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Anjani Kumar 5 years, 1 month ago
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