Tautomerism
Keto-enol tautomerism involves migration of:
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More basic organic principles Practice Questions
In keto-enol tautomerism, the interconversion between the two forms specifically involves the migrat...
In keto-enol tautomerism, the interconversion between the two forms specifically involves the migrat...
Keto-enol tautomerism is shown by:
Keto-enol tautomerism is shown by:
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Hybridization of carbon in benzene is:
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Hyperconjugation is best described as:
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Correct order of carbocation stability:
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In nitration of toluene, major products are:
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Correct decreasing basicity order in aqueous solution:
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Carboxylic acids are stronger acids than alcohols because:
Carboxylic acids are stronger acids than alcohols because:
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About This Question
- Subject
- chemistry
- Chapter
- basic organic principles
- Topic
- tautomerism
- Difficulty
- Medium
- Year
- 2025
Solution
Correct Answer:
Hydrogen and shift of double bond
- Tautomerization: A type of isomerism where isomers interconvert rapidly through the migration of a mobile atom (usually hydrogen).
- Mechanism: In keto-enol tautomerism, a proton (H+) moves from the α-carbon to the carbonyl oxygen.
- Bond Shift: Simultaneously, the C=O double bond shifts to become a C=C double bond.
- Relationship: While keto form is usually more stable, the enol form can be significant in systems like acetylacetone due to intramolecular H-bonding.
This medium difficulty chemistry question is from the chapter basic organic principles, covering the topic of tautomerism. It appeared in the 2025 exam.
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