Alcohols Phenols and Ethers - Result Question 41
####42. Consider the following phenols:
The decreasing order of acidity of the above phenols is
[1999]
(a) III $>$ IV $>$ II $>$ I
(b) II $>$ I $>$ IV $>$ III
(c) I $>$ IV $>$ II $>$ III
(d) III $>$ IV $>$ I $>$ II
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Solution:
- (a) Electron withdrawing group $(-NO_2)$ increases the acidity while electron releasing group $(-CH_3,-H)$ decreases acidity. Also effect will be more if functional group is present at para position than ortho and meta position.
