Arrange the following in increasing order of acidic strength.

Question

Arrange the following in increasing order of acidic strength. (A) I < II < III < IV (B) I < III < II < IV (C) I < II < IV < III (D) IV < III < II < I

Tardigrade Admin · Accepted Answer

I is least acidic due to the absence of any electron withdrawing group on ring. IV is most acidic due to the electron withdrawing resonance effect of - NO 2 from ortho-position, although intramolecular H-bonding decreases acidic strength to some extent. III is less acidic than II due to the steric inhibition of resonance of - NO 2 by two adjacent methyl groups.

Q. Arrange the following in increasing order of acidic strength.

$I < II < III < I V$

$I < III < II < I V$

$I < II < I V < III$

$I V < III < II < I$

Q. Arrange the following in increasing order of acidic strength.

I<II<III<IV

I<III<II<IV

I<II<IV<III

IV<III<II<I

$I < II < III < I V$

$I < III < II < I V$

$I < II < I V < III$

$I V < III < II < I$