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.

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.