For most ketones, hydrate formation is unfavorable, because the equilibrium favors the ketone rather than the hydrate. However, the equilibrium for hydration of hexafluoroacetone favors formation of the hydrate. Provide a plausible explanation for this observation.

Hydrated form of hexafluoroacetone is highly stable.

Explanation:

Hydrated form of hexafluoroacetone is highly stable due to presence of two five membered ring structures formed through hydrogen bonding between F and H (in -OH group).

Due to this stable structure, can not escape the hydrated form and goes back to keto form.

The structure of hydrated form of hexafluoroacetone has been shown below.

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