Freezing point will also be defined as that temperature at which its solid and liquid phases have the same
Correct answer: C. Vapour pressure
- A. Concentration
- B. Ratio between the particles
- C. Vapour pressure
- D. Attraction between the phases
Explanation
It's the standard definition of a Freezing point. The freezing point is "the temperature at which the vapor pressure of the substance in its liquid phase is equal to its vapor pressure in the solid phase," which means that at that temperature the same amount of atoms or molecules are bonding or breaking between solid and liquid at the same rate
This question appeared on the UHS MDCAT 2016 paper, which you can sit online with every answer explained.
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About Evaporation, Boiling Point and Vapour Pressure
Evaporation is the escape of higher-energy molecules from a liquid surface, while vapour pressure is the pressure exerted by vapour in equilibrium with that liquid. The topic distinguishes evaporation from boiling and relates both to temperature, intermolecular forces, surface area, atmospheric pressure and the boiling point.
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