Mole Fraction Calculator
Calculate the mole fraction of each component in a mixture. Enter the moles of every component and the calculator divides each by the total to give its mole fraction. The mole fractions always add up to 1.
| Component | Moles |
|---|---|
What Is Mole Fraction?
The mole fraction of a component is the number of moles of that component divided by the total number of moles of all components in the mixture.
Mole fraction is a dimensionless ratio between 0 and 1, and the sum of the mole fractions of all components equals exactly 1.
Formula
xᵢ = moles of component i ÷ total moles
Example: Mole fraction of A in a mix of 2 mol A and 3 mol B:
xA = 2 ÷ (2 + 3) = 0.4