Partial Pressure Calculator

Formula

To calculate the Partial Pressure (\(PP\)):

\[ PP = TP \times \text{Mole Fraction} \]

Where:

\(PP\) is the Partial Pressure
\(TP\) is the Total Pressure
Mole Fraction is the fraction of moles of substance (must be less than 1)

What is Partial Pressure?

Partial pressure is a term used to describe the portion of pressure that one specific substance exerts when examining an entire gas. In the case of an ideal gas, the gas exerts an outward force on the surroundings. The partial pressure is the force that one singular substance exerts out of the total force of the gas. It is directly proportional to the moles of substance to the total moles.

Example Calculation 1

Let's assume the following values:

Total Pressure (\(TP\)) = 100 atm
Mole Fraction = 0.2

Using the formula:

\[ PP = 100 \times 0.2 = 20 \]

The Partial Pressure is 20 atm.

Example Calculation 2

Let's assume the following values:

Total Pressure (\(TP\)) = 150 atm
Mole Fraction = 0.3

Using the formula:

\[ PP = 150 \times 0.3 = 45 \]

The Partial Pressure is 45 atm.