Chemistry - GOC Question with Solution | TestHub
ChemistryGOCAromaticityEasy2 minQB
ChemistryEasysingle choice
Hydrocarbon A (pK about 15) is much more acidic than hydrocarbon B (pK about 39). Which statement explains this ?
(A)
(B) 
Options:
Answer:
A
Solution:
A is the stronger acid because its conjugate base is more stable. The anion of A is the aromatic cyclopentadienide (6π). The anion of B would be a planar 8π cycloheptatrienide, which is anti-aromatic, so B holds on to its proton much more strongly.
Stream:JEESubject:ChemistryTopic:GOCSubtopic:Aromaticity
⏱ 2mℹ️ Source: QB
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