Chemistry - GOC Question with Solution | TestHub

ChemistryGOCAcid BaseHard2 minQB
ChemistryHardsingle choice

Predict the more acidic compound : ethylene () or ethane ().

Options:

Answer:
C
Solution:

Both conjugate bases carry the charge on carbon, so compare orbitals : the vinyl anion lone pair sits in an sp2 orbital (33% s-character) while the ethyl anion uses sp3 (25% s-character). More s-character holds the pair closer to the nucleus and stabilises it, so ethylene is more acidic.

Stream:JEESubject:ChemistryTopic:GOCSubtopic:Acid Base
⏱ 2mℹ️ Source: QB

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