The correct order of the strengths of the carboxylic acids

is

  • Option 1)

    I > II > III

  • Option 2)

    II > III > I

  • Option 3)

    III > II > I

  • Option 4)

    II > I > III

 

Answers (1)

As we learnt in

Acidic strength of carboxylic acid -

–  More acidic than phenols or alcohols.

–  Acidity increase with the presence of a group with  -I effect in the alkyl group.Whereas it decreases with the presence of  +I group.

–  Acidity increases with increase in the number of halogen atoms on \alpha - position.

–  It decreases with increasing distance of halogen from  -COOH 

–  It increases with increase in the electronegativity of halogen.

-

 

 

Negative inductive effect increases acidity of carboxylic acid.

 


Option 1)

I > II > III

Incorrect

Option 2)

II > III > I

Correct

Option 3)

III > II > I

Incorrect

Option 4)

II > I > III

Incorrect

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