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Why salicylic acid is stronger than p-hydroxy benzoic acid?

Why salicylic acid is stronger than p-hydroxy benzoic acid?

Grade:12th pass

1 Answers

Umakant biswal
5349 Points
7 years ago
the hydroxyl group is situated closer to the carboxylic acid group , in salicylic acid than in para hydroxy benzoic acid . 
this increase acidity in two ways 
1- the electronegative hydroxyl group stabilise the ionise form of carboxylic acid group . 
this occurs in any carboxylic acid when nearby hydrogen atoms are replaced with more electronegative atoms like oxygen and chlorine . 
2- the -ve partial; charge on the oxygen atom weakly attract the hydrogen ion away from the carboxylic acid group . 
which encourage dissociation . 
HOPE IT CLEARS 
ALL THE BEST ..

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