# How does boiling point depend on pressure and temperature?

Sep 24, 2016

#### Answer:

If you are asking for the definition of a boiling point then we can help.

#### Explanation:

The boiling point of a liquid is the temperature at which the vapour pressure of the liquid is equal to the ambient pressure, and bubbles of vapour (= gas) form directly in the liquid.

The $\text{normal boiling point}$ is specified when the ambient pressure is equal to $\text{1 atmosphere}$, and thus the vapour pressure of the liquid equals $\text{1 atmosphere}$ at the normal boiling point.