Pether = Xether*Po ether
Palc = Xalc*Po alc
Ptotal = pether + palc
I assume you know how to get Xether and Xalc. Xether = mols ether/total mols.
Xalc = mols alc/total mols.
solution is made by adding 0.100 mole of ethyl ether to 0.350 mole of ethyl alcohol. If the vapor pressure of ethyl ether and ethyl alcohol at 20°C are 375 torr and 20.0 torr, respectively, the vapor pressure of the solution at 20°C (assuming ideal behavior) is:
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