Introduction to Mole Fraction


The mole fraction of a component within a system is the ratio of the number of moles of that component to the total number of moles of all components within the system.







A powder contains 0.6 moles of Glucose and 0.2 moles of Sodium Hydroxide.

What is the mole fraction of Glucose?

Total Number of Moles in System = Moles of Glucose + Moles of NaOH
Total Number of Moles in System =         0.6         +         0.2
Total Number of Moles in System =        0.8 moles
Mole Fraction of Glucose =        Moles of Glucose        = 0.6
Total Number of Moles          0.8

Mole Fraction of Glucose = 0.75

The mole fraction of Glucose is 0.75.
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