Q39 / 160 · TS EAMCET 2020 (11 Sep Shift 1) · Chemistry

Identify the correct decreasing order of acidic strength. Figure

  • A
    III $>$ II $>$ I
  • Correct answer
    B
    I $>$ II $>$ III
  • C
    II $>$ III $>$ I
  • D
    I $>$ III $>$ II

Solution

Acidic strength Acidic strength increases due to presence of electron withdrawing group and decreases due to presence of electron donating group. $-\mathrm{NO}_2$ is electron withdrawing in nature and $-\mathrm{OCH}_3$ is electron donating in nature. $\text { I }>\text { II }>\text { III }$

Hence, the correct answer is option: 'B'.

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