Express the concentration of a solution in terms of mole fraction.
The concentration of a solution can also be expressed in terms of the amount of moles of solute and solvent present. The concept of mole fraction is a rather simple one that expresses the ratio of either the solute or the solvent to the other components of the solution.
X = mole fraction
n = number of moles
For instance, a solution composed of three moles of water and one mole of methanol (CH3OH) contains the following mole fraction of water:
If we were to compute the mole fraction methanol, we would get
Notice that the sum of both mole fractions is equal to 1.
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