How is vapour pressure of a liquid related to the intermolecular forces between molecules and the temperature?
Asked by HIMANSHI SHARMA
| 11th Oct, 2013,
08:32: PM
Expert Answer:
The pressure exerted by a vapour in equilibrium with its solid or liquid phase is called vapour pressure.
Vapour pressure increases with temperature.
- At higher temperature more molecules have the necessary kinetic energy to escape the intermolecular force of attraction of the liquid phase.
- As the temperature increases, vapour pressure increases and intermolecular force of attraction decreases.
- The more molecules in the vapour phase, the higher the vapour pressure.
The temperature at which vapour pressure becomes equal to atmospheric pressure is called boiling point.
- At higher temperature more molecules have the necessary kinetic energy to escape the intermolecular force of attraction of the liquid phase.
- As the temperature increases, vapour pressure increases and intermolecular force of attraction decreases.
- The more molecules in the vapour phase, the higher the vapour pressure.
Answered by Hanisha Vyas
| 12th Oct, 2013,
08:08: PM
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