Q.
Phenols are acidic compounds. Which of the following phenol is least acidic
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a
b
c
d
answer is D.
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Detailed Solution
EWG increase acidic strength;EDG decrease acidic strength;At para position:-NO2. . . . -I, -M. . . EWG -Cl . . . -I, -M, +M. . . EWG -CH3. . . +I, +R. . .EDG Electron withdrawing power of -NO2>-Cl ∴Acidic strength of 2 > 3 > 1 > 4
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