Dalton’s Law Calculator
Gas Components
Total Pressure
What is Dalton’s Law?
Dalton’s Law of Partial Pressures states that in a mixture of non-reacting gases, the total pressure exerted is equal to the sum of the partial pressures of the individual gases. Each gas’s partial pressure is the pressure that the gas would exert if it occupied the volume alone. This law is fundamental in understanding gas behavior in mixtures and is widely used in chemistry, engineering, and atmospheric science.
How to Calculate Partial Pressures Using Dalton’s Law
Step 1: Enter Gas Components
Input the name of each gas component in your mixture. Click the “Add Gas Component” button to add more gases as needed.
Step 2: Input Mole Fractions
Enter the mole fraction for each gas component. Remember that the sum of all mole fractions should equal 1.0.
Step 3: Specify Total Pressure
Enter the total pressure of your gas mixture and select the appropriate unit (atm, kPa, mmHg, or bar).
Step 4: Review Results
The calculator will display each gas’s partial pressure and show the calculation method. It will also warn you if the mole fractions don’t sum to 1.0.
Step 5: Interpret the Results
Each partial pressure represents the pressure that would be exerted by that specific gas if it were alone in the container at the same temperature and volume.