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Mole Fraction Calculator
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The mole fraction of any component of a solution is the number of moles of that component divided by the total number of moles of solute and solvent. The symbol of mole fraction is X.

The mole fraction does not distinguish the solute from the solvent. For any solution, we can calculate the mole fraction of each compound in the mixture.

Mole Fraction Calculator calculates the mole fraction of each compound in the mixture and it does not distinguish the solute from the solvent.

Steps for Mole Fraction Calculator

Step 1 :

Read the problem and list the values given for solute and solvent.

Step 2 :

Apply the mole fraction formula and substitute the values to get the values of mole fraction.

Mole fraction = $\frac{Moles\ of\ solute}{Moles\ of\ solute\ +\ Moles\ of\ solvent}$

Problems on Mole Fraction Calculator

1. Calculte the mole fractions of methanol CH3OH and water in a solution made by dissolving 4.5g of alcohol in 40g of H2OM of H2O = 18M of CH3OH = 32.

Step 1 :

Moles of CH3OH = $\frac{4.5g}{32.0g/mole}$ = 0.14 mole

Moles of H2O = $\frac{40g}{0.18g/mole}$ = 2.2 mole

Step 2 :

Mole fraction of CH3OH = $\frac{0.14}{0.14+2.2}$

Mole fraction of CH3OH =0.061

The mole fraction of the given solution is 0.061

2. What is the mole fraction of solute in a solution prepared by dissolving 98g H2SO4 (M98) in 162g H2O (M18)?

Step 1 :

Moles of H2SO4 = $\frac{98}{98g/mole}$ = 1 mole

Moles of H2O = $\frac{162g}{18g/mole}$ = 9 mole

Step 2 :

Mole fraction of H2SO4 = $\frac{1}{1+9}$

Mole fraction of H2SO4 = 0.1