Mole Fraction Formula

Mole fraction is another way of expressing the concentration of a solution or mixture. It is equal to the moles of one component divided by the total moles in the solution or mixture.

a = the component that is being identified for mole fraction

Mole fraction is used in a variety of calculations, but most notably for calculating partial pressures.

Mole Fraction Formula Questions:

1. What is the mole fraction of carbon tetrachloride (CCl₄) in solution if 3.47 moles of CCl₄ is dissolved in 8.54 moles of benzene (C₆H₆)?

Answer:

2. What is the mole fraction of formaldehyde (CH₂O) in solution if 25.7 grams of CH₂O is dissolved in 3.25 moles of carbon tetrachloride (CCl₄)?

Answer:

The grams of acetone will need to be converted into moles in order to solve for mole fraction.