Chemistry - GOC Question with Solution | TestHub
ChemistryGOCAcid BaseEasy2 minQB
ChemistryEasysingle choice
Which gas is evolved in the following reaction?
Benzenesulfonic acid + NaHCO₃ sodium benzenesulfonate + gas
Options:
Answer:
B
Solution:
Benzenesulfonic acid (pKa ≈ -2) is much stronger than carbonic acid (pKa ≈ 6.4), so it protonates the bicarbonate ion; the carbonic acid formed decomposes and CO₂ gas is evolved.
Stream:JEESubject:ChemistryTopic:GOCSubtopic:Acid Base
⏱ 2mℹ️ Source: QB
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