Question

Arrange the following compounds in the order of decreasing acidity

• A. $II > IV > I > III$
• B. $I > II > III > IV$
• C. $III > I > II > IV$
• D. $IV > III > I > II$

Answer 1

Answer: (C)

$III > I > II > IV$

Answer 2

Electron releasing group decreases while electron withdrawing
group increases acidic strength by destabilising and stabilising
the phenoxide ion formed respectively.