Properties of Boiling Point
Following are the properties of the boiling point:
- Boiling point of a liquid varies depending on the surrounding pressure. For example, water boils at 100°C (212°F) at sea level, but only at 93°C (199°F) at an altitude of 1,000 m (3,281 ft).
- Boiling point of a liquid can also be affected by the presence of other substances in the liquid. For example, the boiling point of water is lower when salt is added to it.
- Boiling point of a liquid is a measure of the liquid’s ability to change state from a liquid to a gas. The higher the boiling point, the greater the liquid’s ability to resist changes in state.
- Boiling point of a liquid is also a measure of the liquid’s ability to vaporize. The higher the boiling point, the greater the liquid’s ability to resist vaporization.
- Boiling point of a liquid is a function of the liquid’s vapor pressure. The vapor pressure is the pressure exerted by the vapor of the liquid on the walls of the container.
- Boiling point of a liquid is also a function of the liquid’s volatility. The volatility of a liquid is a measure of the liquid’s ability to vaporize.
- Boiling point of a liquid is affected by the surrounding pressure. The higher the surrounding pressure, the higher the boiling point.
Boiling Point Formula
The boiling point of a substance is the temperature at which the substance changes state from liquid state to gas state. The boiling point of a liquid varies depending on the surrounding atmospheric pressure, but it is usually close to the melting point of the solid form of the same substance.