Question

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Answer 1

✪ Answer: ✪

Both -OCH$_3$ and -Cl show I- effect as 'O' present in OCH$_3$ is a strong electron withdrawing group. Cl also shows I- effect again because it is a strong electon withdrawing group.

✪ Acid strength: ✪

As said above, both -OCH$_3$ and -Cl show I- effect. It means the presence of the two groups will lead to increase in acidic strength.Thus, the two given compounds will be more acidic than parent phenol.

✪ More to know ✪

• The order of I- is given by :-

       -NO2  > -CN > -F > -Cl > -Br > -I > -CF3 > -OH > -OCH3 > -C6H5 > H

• I- effect decreases as we move away from the electron withdrawing group.
• Basic nature increases with increase in I+ effect.