Chemistry - STRUCTURAL ISOMERISM Question with Solution | TestHub
ChemistrySTRUCTURAL ISOMERISMTAUTOMERISMMedium2 minQB
ChemistryMediumsingle choice
Passage / Comprehension
Keto-enol tautomerism is a dynamic equilibrium which depends on the stability of keto or enol Tautomerism take place in dilute acidic or basic medium.
How many hydrogen atoms replaced by deuterium ?
Options:
Answer:
B
Solution:
Question Explanation:
The question asks for the final product formed when 2-Methylcyclopentanone is treated extensively with
heavy water (D2O) in a basic medium (DO- ).
Concept: This question is based on tautomerism and H-D exchange.
Solution:
In the presence of a base, the acidic alpha-hydrogens of the ketone undergo keto-enol tautomerism.
During this process, all available alpha-hydrogens are sequentially replaced by deuterium atoms from the solvent.
Stream:JEESubject:ChemistryTopic:STRUCTURAL ISOMERISMSubtopic:TAUTOMERISM
⏱ 2mℹ️ Source: QB
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