Vapor Pressure Calculator (Solvent/Solution)

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

A 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?

  1. First, determine the vapor pressure of the solvent.

    Calculate the vapor pressure of the solvent.

  2. Next, determine the mole fraction.

    Calculate the mole fraction of solution to solvent.

  3. 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.

Vapor Pressure Calculator