The total vapor pressure above this binary solution of heptane and octane is 24.2 torr. At 25 ℃: heptane P = 45.8 torr and octane P = 10.9 torr.  b) Without performing a calculation, which compound

Chemistry: Principles and Practice
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Chapter12: Solutions
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Problem 12.85QE
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The total vapor pressure above this binary solution of heptane and octane is 24.2 torr. At 25 ℃: heptane P = 45.8 torr and octane P = 10.9 torr. 

b) Without performing a calculation, which compound should have a larger mole fraction in the vapor phase compared to its mole fraction in the solution phase? Explain your reasoning. v X l > X v (CIRCLE ONE): heptane octane

c)  What is the mole fraction of heptane in the solution?

 

d) What is the mole fraction of heptane in the vapor?

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