Organic Chemistry Basics 2 Question 18
18. Arrange the following compounds in the order of decreasing acidity
(2013 Main)
(a) II $>$ IV $>$ I $>$ III
(b) I $>$ II $>$ III $>$ IV
(c) III $>$ I $>$ II $>$ IV
(d) IV $>$ III $>$ I $>$ II
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Solution:
18.
(III)
(I)
(II)
(IV)
Electron releasing group decreases while electron withdrawing group increases acidic strength by destabilising and stabilising the phenoxide ion formed respectively.
