Why salicylic acid is more stronger than benzoic acid?

Structurally, the only difference between salicylic acid and benzoic acid is the presence of the hydroxy (-OH) group ortho to the carboxyl group. The more acidic molecule is the one with a more stable conjugate base.

Why is Methanoic acid more acidic than benzoic acid?

Answer: Formic acid is more acidic than benzoic acid. The acidity is due to the stablity of congugate base. Due to more stable conjugate base of formic acid it is more acidic.

Why is P hydroxybenzoic acid weaker than benzoic acid?

Whereas the former helps in the release of H+ from the carboxyl group, the latter tends to oppose the same because of resonance. At the para position, the +R effect dominates the -I effect. Therefore, p-hydroxybenzoic acid is a weaker aid (Ka=2.5×10-5) than benzoic acid (Ka=6.3×10-5).

Is benzoic acid more acidic than 2 hydroxybenzoic 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.

Why M hydroxybenzoic acid is stronger than P hydroxybenzoic acid?

In case of p-hydroxybenzoic acid, the anion is destabilized by the +M effect of the hydroxy group lying on the p group. Whereas, in m-hydoxy benzoic acid, the hydroxy group does not provide +M effect to the C to which the acidic group is attached. Hence, m-hydoxy benzoic acid is stronger than its para derivative.

Which is stronger acid salicylic acid or benzoic acid?

Although p-hydroxy benzoic acid is less acidic than benzoic acid, ortho hydroxy benzoic acid (salicylic acid) is about 15 times more acidic than benzoic acid.

Why salicylic acid is weaker than benzoic 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.

Which show is more acidic in the following benzoic acid Methanoic acid?

Benzoic acid is stronger than methanoic acid but weaker than ethanoic acid.

Which is stronger acid C6H5COOH and CH3COOH?

An electron releasing group i. e+I effect is present in acetic acid whereas no such releasing group is present in formic acid and as we have seen +I effect decreases acidic strenght of an acid . Therefore C6H5COOH(benzoic acid) is stronger than acetic acid(CH3COOH) .

Which is more acidic meta hydroxybenzoic acid or para hydroxybenzoic 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 ortho hydroxybenzoic acid more acidic than para isomeric acid?

For the para isomer, the mesomeric effect makes the compound less acidic in comparison with benzoic acid. Ortho hydroxybenzoic acid is more acidic than para hydroxybenzoic acid because, the lower the pka value increases the acidity of that compound and higher the pka value decreases the acidity of that compound.

What causes internal hydrogen bonding in 2-Hydroxybenzoic acid?

Instead, the formation of internal hydrogen bonding is the reason. Image[1] When 2-hydroxybenzoic acid loses a proton (pKa 1= 3.0), there would be the negative charge on the carboxylic group. The OH group would stabilize this negative charge by hydrogen bonding.

Why are benzoic acids stronger than benzoics?

Nearly all o-substituted benzoic acids are stronger than the benzoic acid. Benzoic acid is a resonance hybrid, and so the carboxyl group is coplanar with the ring. Any o- substituent tends to prevent this coplanarity.

Why does m-hydroxybenzoic acid not release H X + easily?

So for p -hydroxybenzoic acid, the carbonyl carbon has a greater ability to share molecular orbital’s electron cloud to its attached hydroxy group. So the hydroxy group doesn’t release H X + easily. But that’s not the case for m -hydroxybenzoic acid. Is it right?