Which is correct order?
Correct answer: A. Hs > Hv > Hf
- A. Hs > Hv > Hf
- B. Hs = Hf = Hv
- C. Hs < Hf < Hv
- D. None
Explanation
The correct order of enthalpies is: Hs > Hv > Hf. Enthalpy of sublimation (Hs) involves both breaking the intermolecular forces from solid to liquid and from liquid to vapor, making it the highest. Enthalpy of vaporization (Hv) is less than sublimation as it involves the transition from liquid to vapor only. Enthalpy of fusion (Hf) is the least because it only involves the transition from solid to liquid.
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About Properties of Liquids
Liquid behavior depends on intermolecular forces, which produce surface tension, viscosity, capillary action and a definite volume without a fixed shape. The topic also covers vapor pressure, evaporation, boiling point and the effect of temperature and external pressure, while distinguishing evaporation at the surface from boiling throughout the liquid.
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