Partial Pressure Calculator

Enter value and click on calculate. Result will be displayed.
Enter the values of 'moles of gases(n)' separated by comma :
Temperature (t) :
Volume (v) :
Result:
Moles of gas (n) :
Pressure :

What is a Partial Pressure Calculator?

A Partial Pressure Calculator determines the pressure exerted by an individual gas in a mixture, based on Dalton’s Law of Partial Pressures. It helps analyze gas behavior in chemistry, physics, and engineering.

Why Use a Partial Pressure Calculator?

  • To analyze gas mixtures (e.g., in chemistry, scuba diving, medical gases).
  • To calculate oxygen levels in respiratory and aerospace applications.
  • To predict reaction behavior in chemical equilibrium studies.

How to Calculate Partial Pressure?

Using Dalton’s Law:

Pi​ = Xi​ × Ptotal​

Where:

  • Pi​ = Partial pressure of gas ii i
  • Xi​ = Mole fraction of gas
  • Ptotal​ = Total pressure of the gas mixture

Steps:

  1. Find the mole fraction of the gas.
  2. Multiply by the total pressure to get partial pressure.

Alternatively, for ideal gases:

Where n = moles, R = gas constant, T = temperature, and V = volume.

When to Use It?

  • In chemistry labs (e.g., gas reactions, equilibrium).
  • In respiratory medicine (e.g., oxygen/nitrogen ratios in air).
  • In scuba diving (e.g., gas mix calculations for safe breathing).
  • In astronomy & aerospace (e.g., atmospheric pressure on planets).