Engineering
Chemistry
Tautomerism
Question
How many Hydrogen atoms are replaced by D in the following tautomerization.
Know your College Admission Chances Based on your Rank/Percentile, Category and Home State.
Get your JEE Main Personalised Report with Top Predicted Colleges in JoSA
Solution
Tautomerization involves the migration of a hydrogen atom and switching of bonds. In keto-enol tautomerism, the enol form has acidic hydrogens attached to oxygen. When deuterium (D) is involved, it replaces these exchangeable hydrogens.
The enol form has one hydroxyl group (-OH) with one acidic hydrogen. During tautomerization, this hydrogen is replaced by deuterium. Therefore, only one hydrogen atom is replaced by D.
Final Answer: 1