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Question

The correct statements about squaric acid?

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  1. It is stronger acid than phenol
  2. It can form two conjugate base
  3. It can liberate CO2 from NaHCO3
  4. The diconjugate base of squaric acid has all CC bond lengths are equal

A
It can form two conjugate base
B
The diconjugate base of squaric acid has all CC bond lengths are equal
C
It can liberate CO2 from NaHCO3
D
It is stronger acid than phenol
Solution
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It is stronger than phenol. Phenol has pKa value 10.0 whereas squaric acid has pKa value 1.5 . So, lesser the pKa value more will be the acidity.
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