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Tautomerism is due to spontaneous interc...

Tautomerism is due to spontaneous interconversion of two isomeric forms with differentfunctional groups into each other. The term tautomer means constitutional isomers thatundergo such rapid inter conversion that they cannot be independently isolated. In keto-enol tautomerism although Keto form in general is more stable, but some factors like H-bonding and extended double bonds conjugation may increase the stability of enol form
Which of the following statements are correct of the following

A

I and II are tautomers

B

III is conjugate base of II

C

I and Ill are tautomers

D

III is resonance structure of I

Text Solution

Verified by Experts

The correct Answer is:
A, D
I and II are Tautomers, III is the resonance structure of I.
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Tautomerism is due to spontaneous interconversion of two isomeric forms with differentfunctional groups into each other. The term tautomer means constitutional isomers thatundergo such rapid inter conversion that they cannot be independently isolated. In keto-enol tautomerism although Keto form in general is more stable, but some factors like H-bonding and extended double bonds conjugation may increase the stability of enol form Enolic form of acetyl acelone is stabilized due to (I) resonance as a result of conjugation (II) intra molecular H-bonding (III) dipole- dipole repulsion

keto-enol tautomerism is observed in

_____bond cannot exist independently.

Which of the following is/are incorrect about keto-enol tautomerism?

Which of the following orbitals are overlapped to form covalent bond?

Which of the following pairs will form the most stable ionic bond?

What statement is correct for Keto-enol tautomerism ?