# 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 (CCl_{4}) in solution if 3.47 moles of CCl_{4} is dissolved in 8.54 moles of benzene (C_{6}H_{6})?

Answer:

2. What is the mole fraction of formaldehyde (CH_{2}O) in solution if 25.7 grams of CH_{2}O is dissolved in 3.25 moles of carbon tetrachloride (CCl_{4})?

Answer:

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

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