A solution contains a mixture of pentane and hexane at room temperature. The solution has a vapor pressure of 246 torr . Pure pentane and hexane have vapor pressures of 425 torr and 151 torr, respectively, at room temperature.
a. What is the mole fraction of hexane? (Assume ideal behavior.)

Explanation:

The pressure of the solution is:

(1)

(1)

Where X is mole fraction of each compound. Also, you can write:

(2)

Replacing (2) in (1):

-179 =

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explanation:

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explanation: a formula which shows the arrangement of atoms in the molecule of a compound