Mark the correct order of decreasing acid strength of the following compounds

Options

A. `(V)gt(IV)gt(II)gt(I)gt(III)`
B. `(II)gt(IV)gt(I)gt(III)gt(V)`
C. `(IV)gt(V)gt(III)gt(II)gt(I)`
D. `(V)gt(IV)gt(III)gt(II)gt(I).`

Answer

B

Explanation

It is the correct order of decreasing acidic strength `-NO_(2)` group being electron withdrawing in nature, increasing acidic strenght. Its effect is more pronounced at the para position than at the meta position. Similarly `-OCH_(3)` group is electron releasing in nature and decreases acidic strength. its effect is more pronounced at teh para position as compared to meta position.