Hmmmm.
.."...,the mole fraction of pentane is .15. What is the mole fraction of pentane?
What am I missing?
Pentane, C5H12, and hexane, C6H14, combine to form an ideal solution. At 25⁰C the vapor pressure of pentane is 511 torr and that of hexane is 150 torr. In the vapor over a pentane-hexane solution at 25⁰C, the mole fraction of pentane is 0.15. What is the mole fraction of pentane in the solution?
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