Which one is the most acidic compound?

  • Option 1)

  • Option 2)

  • Option 3)

  • Option 4)

 

Answers (2)

As learnt

Effects of substituents on acidity of phenols -

1.  Electron withdrawing group like   -NO_{2},-CN,-X,-CHO

2.  Electron donating group like    -R,-OR,-NH_{2}

- wherein

1.  Increase the acidic strength of phenol.

2.  Decrease the acidic strength of phenol.

 

 

It has 3-strong withdrawing group which increases acidity hence correct answer is (4)


Option 1)

This option is incorrect

Option 2)

This option is incorrect

Option 3)

This option is incorrect

Option 4)

This option is correct

A Aakash
  • as NO² is an electronic withdrawing group and acidic strength is directly proportional to -I Effect.
  • So,4th option has three NO² group so it is most acidic in nature.

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