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Question
Which one is the most acidic compound?
Which one is the most acidic compound?
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Solution
The correct option is C
The hydrogen of phenol and substituted phenols are acidic in general.
Acidity, is roughly a measure of the ease with which the compound(s) lose a proton.
Hence, the compound which gives the most stable conjugate base will be the most acidic.
Methyl groups tend to increase the electron density of the ring by hyperconjugation.
Nitro group is highly electron withdrawing (by both conjugation as well as inductive effects).
Hence, picric acid, also known as - 2,4,6,-trinitrophenol - will be the strongest acid!
The hydrogen of phenol and substituted phenols are acidic in general.
Acidity, is roughly a measure of the ease with which the compound(s) lose a proton.
Hence, the compound which gives the most stable conjugate base will be the most acidic.
Methyl groups tend to increase the electron density of the ring by hyperconjugation.
Nitro group is highly electron withdrawing (by both conjugation as well as inductive effects).
Hence, picric acid, also known as - 2,4,6,-trinitrophenol - will be the strongest acid!
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