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keto-enol tautomerism is observed in...

keto-enol tautomerism is observed in

A

B

C

D

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The correct Answer is:
B, D
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Normal water is mainly protium oxide, H_(2)O However, if protium atoms in normal water molecule are replaced completely by deuterium atoms, the resulting water is called heavy water. Acetone exhibits keto-enol tautomerism CH_(3)-overset(O)overset(||)C-CH_(3) hArr CH_(3)-Coverset(OH)overset(||)=(CH_(2)) Which of the following products is chained when acetone is treated with an excess D_(2)O sufficient time in presence of small amount of dilute NaOH solutions ?

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

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

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