Enter the moles of solute and moles of sloven into the mole fraction calculator below. The mole fraction is a ratio of moles of solute to total moles.
Mole Fraction Formula
The following formula is used in the mole fraction calculator above:
Mole Fraction(Xi) = Moles of Solute / (Moles of Solute + Moles of Solvent)
- Where Xi is the mole fraction as a ration, not a percent.
What is a mole fraction?
The mole fraction can be defined as the amount of moles of a solute divided by the total amount of moles of the solution. This can be see in the equation given above. A mole fraction can be converted into a mole percent, or molar percentage by multiplying the result of the mole fraction by 100.
Unlike molar concentration, the mole fraction is a ratio of moles to moles. A molar concentration is a ratio of moles to volume.
How to calculate a mole fraction
The following example is a step by step guide on how to calculate a mole fraction. This example follows the formula given above.
- First, the total amount of moles of solute and solvent need to be calculated. This can be done through measuring the mass and determining the number of moles per unit mas.
- The next step is to separate the solute and repeat step one.
- Finally, enter the information into the formula or calculator above.
- Analyze the results.
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