What is the PKA of 4-nitrobenzoic acid?
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What is the PKA of 4-nitrobenzoic acid?
3.41
4-Nitrobenzoic acid
| Names | |
|---|---|
| Solubility in water | <0.1 g/100 mL at 26 °C |
| Acidity (pKa) | 3.41 (in water), 9.1 (in DMSO) |
| Magnetic susceptibility (χ) | -78.81·10−6 cm3/mol |
| Related compounds |
What is the PKA of 3 nitrobenzoic acid?
3.47
3-Nitrobenzoic acid
| Names | |
|---|---|
| Melting point | 139 to 141 °C (282 to 286 °F; 412 to 414 K) |
| Solubility in water | 0.24 g/100 mL (15 °C) |
| Acidity (pKa) | 3.47 (in water) |
| Magnetic susceptibility (χ) | -80.22·10−6 cm3/mol |
Which is more acidic m-nitrobenzoic acid or p-nitrobenzoic acid?
Acidity in ascending order => o-Nitrobenzoic acid > p-Nitrobenzoic acid > m-Nitrobenzoic acid > Benzoic acid. The acidity of ortho-nitrobenzoic acid is more as compared with para-nitrobenzoic acid because of the “ortho effect”. The explanation is relying on the steric inhibition of the resonance of the COOH group.
Is p-nitrobenzoic acid a strong acid?
p-Nitrobenzoic acid is a stronger acid than benzoic acid.
Why P nitrobenzoic acid has lower pKa value 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.
Why P nitrobenzoic acid has higher Ka value than benzoic acid?
It tends to release more protons from the carboxylic group. Thus, the dissociation of p-Nitrobenzoic acid takes place to a greater extent compared to benzoic acid. Hence, p-Nitrobenzoic acid has greater `K_(a)` value than benzoic acid.
Is 3-nitrobenzoic acid an acid or base?
The compound was identified as 3-nitrobenzoic acid by a combination of tests. The compound was an organic compound with a melting point of 131-141°C, which was found to be most soluble in polar organic solvents.
Which is the strongest acid o-nitrobenzoic acid p-nitrobenzoic acid m-nitrobenzoic acid benzoic 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.
Why p-nitrobenzoic acid is more acidic than benzoic acid?
Expert-verified answer 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?
Why P-nitrobenzoic acid has higher Ka value than benzoic acid?
Why is p-Nitrobenzoic acid 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.
Why p-Nitrobenzoic acid has higher Ka value than benzoic acid?
Why pK value of 4 nitrobenzoic acid is lower than that of benzoic acid?
Which is stronger acid benzoic acid or nitrobenzoic acid?
Solution : m-nitrobenzoic acid is a stronger acid than benzoic acid. Presence of `- NO _(2)` (EWG) group on benzene decreases its electron density and increase the acidity.
What is the PKA of benzoic acid?
4.2
pKa Values for Organic and Inorganic Bronsted Acids at 25 oC
| Name | pKa |
|---|---|
| Benzoic acid | 4.2 |
| Anilinium ion | 4.6 |
| Acetic acid | 4.8 |
| Pyridinium ion | 5.2 |
