The pressure of a vapour in contact with its liquid or solid form.
Example sentencesExamples
- This is the temperature at which the vapor pressure of the liquid is the same as that of the atmosphere.
- If some of the vapor is removed by pumping it away then more of the liquid will evaporate to take its place and maintain the vapor pressure.
- For a given external pressure, there is a temperature at which the vapor pressure of the liquid is equal to the external pressure.
- Since the boiling point of a substance is the temperature at which its vapor pressure is equal to the atmospheric pressure, a substance whose boiling point is lower than another's is said to be more volatile.
- At the temperature where the vapor pressure of the liquid is equal to the atmospheric pressure, the liquid is said to be at its normal boiling point.