Which nitrobenzoic acid is most acidic?

o-nitrobenzoic acid
o-nitrobenzoic acid is the strongest acid among these. −NO2 group is a powerful electron withdrawing group and it has most effect when present at o-position.

What is the correct order of acidic strength of benzoic acid O-nitrobenzoic acid M nitrobenzoic acid and p-nitrobenzoic acid?

The correct order of acid strengths of benzoic acid (X) peroxybenzoic acid (Y) and p-nitrobenzoic acid (Z) is. (c) The acidic strength depends upon the stabilisation the carboxylate ion left after the release of H+ ion by the dispersal of negative charge. Therefore, the correct order is (C).

Which is more acidic benzoic acid or p toluic acid?

It is this stabilization provided by the methyl group that makes o-toluic acid a stronger acid (pKa=3.91) than benzoic acid (pKa=4.19).

Why is ortho nitrobenzoic acid more acidic than Ortho hydroxybenzoic acid?

Due to this the electron cloud of the-COOH group is more effectively dispersed making Ortho substituted benzoic acid more acidic. In the case of Ortho nitro phenol, H-bond is formed between N of -NO2 and H of -OH making -OH reluctant to lose H+. This decreases the acidity of Ortho nitro phenol.

Why p-nitrobenzoic acid is stronger than M 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.

Is nitrobenzoic acid acidic?

Nitrobenzoic acids are derivatives of benzoic acid. Two are commercially important. They are about ten times more acidic than the parent benzoic acid. Nitrobenzoic acid can be prepared through the oxidation of styrene in boiling nitric acid.

Why M nitrobenzoic acid is a stronger acid than benzoic acid?

Because the benzoic acid have a resonance effect. But the nitrobenzoic acid have a intermolecular bond. That’s why the nitrobenzoic acid is stronger than the benzoic acid. Nitro group is an electron withdrawing group which increases the acidity of the benzoic acid.

Which is more acidic isomer of nitrobenzoic acid?

o-nitrobenzoic acid is more acidic compared to p-nitrobenzoic acid. This is because of two reasons: Ortho Effect.

Why is M toluic acid more acidic than P toluic acid?

The methyl group at ortho & para-position(4-position) destabilises Negative charge of corresponding Carboxylate ion both +I (Inductive ERG)) as well as by +H (hyperconjugation). Hence m-isomer is more acidic than para-isomer.

Which toluic acid is more acidic?

o-Toluic acid is more acidic than benzoic acid.

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 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 p-nitrobenzoic acid more acidic than M-nitribenzoate?

When both acids donate their proton from -COOH group then p-nitrobenzoate is more stabilized due to -M effect of nitro group than m-nitribenzoate because -M group more deactivates the ring / decreases charge than -I group. Thus, p-nitrobenzoic acid is more acidic than m-nitrobenzoic acid.

Which is more acidic – benzoic acid or carboxylic acid?

P-nitro benzoic acid is more acidic than benzoic acid, because nitro group have -I effect (electron withdrawing group) due which it withdraws electron toward itself and deactivate the benzene ring to electrophilic attack, therefore, carboxylic acid group easily releases H+ ion than benzoic acid.

What are the Ka values of benzoic acid and p-nitrobenzoic acid?

The Ka values of benzoic acid and p-nitrobenzoic acid are 6.3 x 10–5 and 3.8 x 10 –4, respectively. Explain why these values differ. 21.17 Estimate the p Ka values of the two carboxyl groups in 3-chlorohexanedioic acid.

Does hydrogen bonding exist in 2-Nitrobenzoic acid?

The hydrogen bonding effect that you describe does exist in 2-nitrobenzoic acid but this does not act to make it less acidic.