Problem: What is the mole fraction of CH3OH in an aqueous solution that is 12.0 m in CH3OH?A. 0.333B. 0.667C. 0.178D. 0.216 E. 0.400

FREE Expert Solution

We’re being asked to determine the mole fraction of CH3OH in an aqueous solution that is 12.0 m in CH3OH


Recall that molality is the ratio of the moles of solute and the mass of solvent (in kilograms)


In other words:


Molality (m)=moles solutekg solvent



Mole Fraction (X) relates the moles of solute and solvent within a solution:

mole fraction (X)=mole of solutemole of solution


We’ll calculate the mole fraction of caffeine using the following steps:


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Problem Details

What is the mole fraction of CH3OH in an aqueous solution that is 12.0 m in CH3OH?

A. 0.333

B. 0.667

C. 0.178

D. 0.216 

E. 0.400

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