Why the standard enthalpy of vaporization(water) …
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Gaurav Seth 4 years, 9 months ago
Enthalpy of vaporization is the amount of energy that must be supplied to the liquid in order to change the liquid into a gas. Enthalpy is also regarded as boiling temperature of the liquid.
Acetone does 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.
Water 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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