The molar enthalpy of vaporization of acetone is less than of water .

1.	The molar enthalpy of vaporization of acetone is less than of water . Why?
Answer» Acetone\xa0does not have hydrogen bond, and thus intermolecular forces are comparatively weaker which makes it boil/evaporates fast, thus reducing the molar enthalpy of vaporization. Also, Acetone does not polar O-H bond contributing to low enthalpy.\xa0Water has non-polar region and also has strong hydrogen bond. Water has highly polar O-H bond which makes water boil at relatively higher temperature than acetone thus has enthalpy greater than that of acetone.

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