Identify the compound that exhibits tautomerism?

2-Butene

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Lactic acid

No worries! We‘ve got your back. Try BYJU‘S free classes today!

2-Pentanone

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Phenol

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C
2-Pentanone

Lets just first draw the structure of each molecule.

Lactic acid -- CH3-CH(OH)-COOH

One of the necessary conditions for tautumerism is the presence of $α$ -hydrogen

$\to$ $α$ -hydrogen is present on $α$ - carbon

Therefore these conditions are possible only in option (C)

$C H_{3} - O | | C - C H_{2} - C H_{2} - C H_{3} K e t o f o r m ⇋ C H_{3} - O H | C = C H C H_{2} C H_{3} E n o l f o r m$

Suggest Corrections