Molecular Mass of Ethanol = 46g
11.0 molal = 11 moles in 1 L solution
Molecular mass of water = 18g
Density of water= 1kg/m3 = 1000g/l
So, Mass of water in 1l solution = 1000g
so moles = 1000/18 = 55.55 moles
Thus, mole fraction of ethanol = 11.0/ ( 11.0 + 55.6 ) = 0.165
What do you mean by mole fraction ?
There are several ways to indicate the concentration of the solution and mole fraction is one of them. Mole fraction is a unit of concentration. In the solution, the relative amount of solute and solvents are measured by the mole fraction and it is represented by “X.”
The mole fraction is the number of moles of a specific component in the solution divided by the total number of moles in the given solution.
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