Enter the mole fraction and vapor pressure of a solvent into the calculator below to calculate the vapor pressure of the solution.

## Vapor Pressure Formula

The following formula is used to calculate the vapor pressure of a solvent.

VP(solution) = MF * VP(solvent)

- Where VP(solution) is the the vapor pressure of the solution
- MF is the mole fraction
- VP(solvent) is the vapor pressure of the solvent.

This equation is also known as Raoult’s Law. A law that describes the change in vapor pressure of a solution based on mole fractions and pressures of the solvent.

## Vapor Pressure Definition

Vapor pressure is the pressure exerted by a vapor when it is in thermodynamic equilibrium.

## How to calculate vapor pressure?

How to calculate vapor pressure?

**First, determine the vapor pressure of the solvent.**Calculate the vapor pressure of the solvent.

**Next, determine the mole fraction.**Calculate the mole fraction of solution to solvent.

**Finally, calculate the vapor pressure of the solution.**Calculate the vapor pressure using the equation above.

## FAQ

**What is vapor pressure?**

Vapor pressure is a measure of the pressure exerted by a vapor when at equilibrium.