Which is more acidic para benzoic acid or meta benzoic acid?

+I-Effect and +R-Effect intensifies the negative charge on the carboxylate ion thereby making the carboxylate ion less stable and decreases the acidity of the benzoic acid. So, meta-hydroxybenzoic acid is more acidic than para-hydroxybenzoic acid.

Why is benzoic acid more acidic than para methoxy benzoic acid?

So because the conjugate base (leftover species after proton loss) is less stable for para methoxy benzoic acid as compared to that of benzoic acid, benzoic acid looses its proton easily and hence is more acidic.

Why ortho hydroxy benzoic acid is more acidic than ortho methoxy benzoic acid?

However, o-hydroxy benzoic acid is more acidic than benzoic acid. The enhanced acidity of o-isomer is due to very effective intramolecular hydrogen bonding in the carboxylate ion. As a result, o-hydroxy benzoate ion is stabilized to a great extent and therefore, it makes o-isomer more acidic.

Which is more acidic para nitrobenzoic acid or para methoxy benzoic acid?

p-nitrobenzoic acid is more acidic than p-methoxybenzoic acid. The difference in acidity can be explained in terms of the stability of the corresponding conjugate bases.

Why para nitro benzoic acid is more acidic than Ortho nitrobenzoic acid?

(B)Inductive Effect: Due to inductive effect, the nitro group withdraws electron. As a result, H+ ion is liberated and the negative charge on oxygen is reduced. Therefore, more liberation of H+ is causes the acidity of a compound. Hence, , o-nitrobenzoic acid is more acidic compared to p-nitrobenzoic acid.

Why para nitro benzoic acid is stronger than benzoic acid?

“P-nitrobenzoic acid is stronger than benzoic acid.” In the benzoic acid there is a resonance effect which stabilizer is the carboxylic group present in that benzoic acid. Since the intermolecular bond is stronger than the resonance effect the nitro benzoic acid is more stabilized and stronger in acidity parameter.

Which is more acidic para toluic acid or para hydroxybenzoic acid?

relative p-Toluic acid (pka 4-38) Relative acid strength of hydroxybenzoic acids. Due to ortho-effect, o-hydroxybenzoic acid is the strongest acid.

Which is more acidic ortho hydroxy benzoic acid or ortho methoxy benzoic acid?

So meta-hydroxy benzoic acid is more acidic than benzoic acid. Compared to meta-hydroxy benzoic acid it’s ortho counterpart is much more acidic due to ortho effect. Hence ortho-hydroxy benzoic acid is more acidic than benzoic acid.

Which is more acidic ortho or para salicylic acid?

Salicylic acid is more acidic than para-hydroxy benzoic acid because in salicylic acid -OH group is present at the ortho position which accounts for the ortho effect and stabilises COO- by hydrogen bonding due to the -OH group.

Is 4 methoxy benzoic acid or 4 nitrobenzoic acid more acidic?

4 nitrobenzoic acid is more acidic than 4 methoxy benzoic acid because nitro group is an electron withdrawing group so it increases the acidity while methyl group is an electron releasing group.

Why is nitrobenzoic acid more acidic than benzoic acid?

Detailed Answer :As 4-nitrobenzoic acid contains –NO2 group which is an electron withdrawing group resulting in higher acidity than benzoic acid. Greater is the acidic character lower is the pKa value. Thus pKa value of 4-nitrobenzoic acid is lower than that of benzoic acid.