What is boiling temperature?

Boiling temperature or boiling point of a liquid is the temperature at which the liquid's vapor pressure equals the pressure surrounding the liquid and the liquid changes into a vapor. The boiling temperature of a liquid varies depending on the pressure surrounding it.

At a given pressure, each liquid has a specific boiling point. For example, at sea level (standard atmospheric pressure), the boiling point of water is 100 degrees Celsius (212 degrees Fahrenheit). However, if the pressure is increased, the boiling point of water also increases. For example, in a pressure cooker, the boiling point of water can reach 120 degrees Celsius (248 degrees Fahrenheit).

The boiling point of a liquid is also affected by the composition of the liquid. For example, adding salt to water increases its boiling point. This is why water boils at a higher temperature in the ocean than it does in a freshwater lake.

The boiling point of a liquid can be used to identify the substance. For example, the boiling point of ethanol is 78 degrees Celsius (173 degrees Fahrenheit), while the boiling point of methanol is 65 degrees Celsius (149 degrees Fahrenheit).