Tuesday
July 22, 2014

Homework Help: physics

Posted by anonymous on Wednesday, April 11, 2012 at 2:14pm.

Again, I know I keep posting questions but I'm begging you for help.

At 25C the vapour pressure of pure pentane is 511 torr and that of hexane is 150. torr.
What is the mole fraction of pentane in a pentane-hexane solution that has a vapour pressure of 339 torr at 25C?

What is the mole fraction of hexane in the vapour that is in equilibrium with this solution?
(Assume ideal gas behaviour.)

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