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WHAT IS TAUTOMERISM?

Tautomerism is a special type of functional isomerism in certain  substances that they exhibit properties of two functional groups .For example ,acetoacetic ester behaves like a ketone as well as an alcohol.This arises due to the migration of  a labile hydrogen atom from one place to another .
Example : In acetoacetic ester ,the interconversion between keto and enolic group takes place as follows .




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