How to Use This Calculator

Enter the total pressure of the gas mixture in atmospheres and the mole fraction of the specific gas you're analyzing. The calculator will instantly compute the partial pressure of that gas.

What This Calculator is For

This tool is ideal for students, chemists, and researchers to determine the individual gas pressures in a mixture, an essential component of Dalton’s Law of Partial Pressures.

Formula Used

Partial Pressure (P_gas) = Mole Fraction × Total Pressure

Example

Suppose a gas mixture has a total pressure of 2 atm and the mole fraction of oxygen is 0.21. The partial pressure of oxygen is:

P_O2 = 0.21 × 2 = 0.42 atm

References

• Half-Life Calculator and Finder
• Atkins, P. & de Paula, J. (2010). Physical Chemistry.