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  • Answer please! The increasing order of the acidity of thefollowing carboxylic acids is :

The increasing order of the acidity of the
following carboxylic acids is :

  • Option 1)

    I < III < II < IV

  • Option 2)

    IV < II < III < I

  • Option 3)

    II < IV < III < I

  • Option 4)

    III < II < IV < I

 

Answers (2)

As we have learnt,

 

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.

-

 

-NO2 and -Cl is deactivating group  while -OH is ring activating group.

Ring deactivating group increases the acidic character whereas ring activating group decreases the acidic strength.

 


Option 1)

I < III < II < IV

Option 2)

IV < II < III < I

Option 3)

II < IV < III < I

Option 4)

III < II < IV < I

Posted by

subam

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