Mole fraction is a unit of concentration, defined to be equal to the number of moles of a component divided by the total number of moles of a solution.
Because it is a ratio, mole fraction is a unitless expression.
Formula to calculate mole fraction.
X is the component that is being identified for mole fraction.
Calculate the mole fraction of carbon tetrachloride (CCl4) in solution if 2.5 moles of CCl4 is dissolved in 8.0 moles of benzene (C6H6).
Thus, the mole fraction is 0.24.