Which of the following has highest vapour pressure?
Correct answer: A. Water
- A. Water
- B. Glycerol
- C. Isopentane
- D. All same
Explanation
The vapor pressure of a liquid is directly proportional to the strength of the intermolecular forces between the molecules in the liquid. Therefore, water has the highest vapor pressure, followed by glycerol, and then isopentane.
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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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More Evaporation, Boiling Point and Vapour Pressure questions
Vapour pressure of water is 4.579 torr at 0°C and 9.209 torr at 10°C, so increase in vapour pressure from 0°C to 10°C is 4.630 torr. What will be the change in vapour pressure from 90°C to 100°C?
Max boiling point is of:
Vapour pressure is inversely proportional to:
The boiling point of water would be highest at:
False for evaporation is:
Vapour pressure at 100°C is: