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For ideal solutions, the volumes are additive. Th…

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Problem 116 Hard Difficulty

A mixture of ethanol and 1 -propanol behaves ideally at $36^{\circ} \mathrm{C}$ and is in equilibrium with its vapor. If the mole fraction of ethanol in the solution is $0.62,$ calculate its mole fraction in the vapor phase at this temperature. (The vapor pressures of pure ethanol and 1-propanol at $36^{\circ} \mathrm{C}$ are $108 \mathrm{mmHg}$ and $40.0 \mathrm{mmHg}$, respectively.)

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Video Transcript

we're given the mole fraction of if no, in addition to the partial pressure 108 And for one per open, all were given the partial pressure. 40. We know that ex upset one equals one minus X subset to which would Pogue in Ah, the mole Fraction X upset, too, to give us an X one of 0.3 a, which we will use in this equation here to give us the p one off 15.2, which really use here and needs to be converted to give us a mole fraction of 8.15 times 10 to the negative for.

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Problem

For ideal solutions, the volumes are additive. Th…

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Raymond Chang, Kenneth A. Goldsby

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