Equilibrium Amounts For aldehydes and ketones,the keto form is greatly favored at equilibrium. An enantiomer with an enolizable hydrogen can form a racemic mixture. enolizable hydrogens 1 CH H+orOH H a carbons (R)configuration enol (achiral) (S)configuration Copyright 2005 Pearson Prentice Hall,Inc. => Chapter 22 7 Chapter 22 7 Equilibrium Amounts • For aldehydes and ketones, the keto form is greatly favored at equilibrium. • An enantiomer with an enolizable hydrogen can form a racemic mixture. =>