Question

at 17.9 degrees celsus ethyl ether has a vapor pressure of 400 torr. What is the mole fraction of ethly ether in a solution which has a vapor pressure of 380 torr, if the solute is non-volatile at 17.9 degrees celsus?
P<sub>ethyl ether</sub> = X<sub>ethyl ether</sub>*P<aup>o</sup><sub>ethylether</sub>
380 = X*400
Solve for X

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