Chemistry - GOC Question with Solution | TestHub
ChemistryGOCAcid BaseEasy2 minQB
ChemistryEasysingle choice
Which compound releases CO₂ gas on reaction with NaHCO₃(aq)?
Options:
Answer:
C
Solution:
Only an acid stronger than carbonic acid (pKa ≈ 6.4) can liberate CO₂ from bicarbonate. Benzoic acid (pKa 4.2) is stronger and evolves CO₂. Phenol (pKa ≈ 10) and cyclohexanol (pKa ≈ 17) are weaker acids than carbonic acid, and benzamide is not acidic at all.
Stream:JEESubject:ChemistryTopic:GOCSubtopic:Acid Base
⏱ 2mℹ️ Source: QB
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