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प्रश्न
Which one of the following has the lowest pKa value?
पर्याय
CH3 – COOH
O2N–CH2–COOH
Cl–CH2–COOH
HCOOH
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उत्तर
O2N–CH2–COOH
Explanation:
It is simpler to remove an electron since the –NO2 group is an electron-withdrawing group. As a result, the acidity is stronger, and the pKa value is lower.
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संबंधित प्रश्न
Account for the following:
o-nitrophenol is more steam volatile than p-nitrophenol.
Phenols do not react with one of the following:
Phenol is more acidic than alcohol because ____________.
Acidity of phenol is due to ____________.
In CH3CH2OH, the bond that undergoes heterolytical change most readily is ____________.
Mark the correct order of decreasing acid strength of the following compounds.
| (a) |  |
| (b) |  |
| (c) |  |
| (d) |  |
| (e) |  |
Assertion: o-Nitrophenol is less soluble in water than the m- and p-isomers.
Reason: m- and p- Nitrophenols exist as associated molecules.
Arrange the following in the increasing order of their property indicated:
4-Nitrobenzoic acid, benzoic acid, 3,4-Dinitrobenzoic acid, 4-Methoxy benzoic acid (Acid strength)
Give the structure of the product you would expect when the following alcohol reacts with HBr.
2-Methylbutan-2-ol
Compare acidity of phenol with that of ethanol.
