Mole Fraction Calculator
Calculate mole fraction (X) of components in a mixture. Mole fraction = moles of component / total moles
Mole Fraction: X = n / n(total)
Total Moles
2.0000 mol
Mole Fraction A (XA)
0.500000
Mole %
50.00%
Mole Fraction B (XB)
0.500000
Mole %
50.00%
Verification:
XA + XB = 1.000000
Sum of all mole fractions should equal 1
What is Mole Fraction?
Mole fraction (X) is a way of expressing the concentration of a component in a mixture as the ratio of the number of moles of that component to the total number of moles of all components. It is a dimensionless quantity that ranges from 0 to 1. The sum of all mole fractions in a mixture always equals 1. Mole fractions are particularly useful in gas mixtures and for calculating partial pressures using Dalton's law.