Chemistry
Mole Fraction
Calculate the mole fraction of a component.
Xᵢ = nᵢ / Σn
Formula Explanation
Mole fraction is the number of moles of a component divided by total moles of all components.
Variables Explained
nᵢ = Moles of component i; Σn = Total moles.
Solved Example
A mixture contains 2 mol A and 3 mol B. Find the mole fraction of A.
Xₐ = 2 / (2 + 3) = 0.4.