On which factor does the boiling point of a liquid not depend?
Correct answer: C. Amount of liquid
- A. External pressure
- B. Vapour pressure
- C. Amount of liquid
- D. Intermolecular forces
Explanation
The boiling point of a liquid doesn't depend on the amount of liquid or the surface area of a liquid. It does depend on the intermolecular forces, vapor pressure, and external pressure. The intermolecular forces determine the amount of energy needed to overcome bonds. When a liquid is heated, the vapor pressure increases. At one point, the vapor pressure reaches the external pressure. This is the boiling point.
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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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