A solution contains 50.0 g of heptane (C7H16) and 50.0 g ofoctane (C8H18) at 25

Question

A solution contains 50.0 g of heptane (C7H16) and 50.0 g ofoctane (C8H18) at 25 Degree C. The vapor pressure of pureheptane and pure octane at 25 degree C. The vapor pressure ofpure heptane and pure octane at 25 degree C are 45.8 torr and 10.9torr, respectively. Assuming ideal behavior, calculate eachof the following:

a. the vapor pressure of each of the solution components in themixture.

b. the total pressure above the solution

c. the compostion of the vapor in mass percent

d. why is the comostion of the vapor different from thecomposition of the solution?

Explanation / Answer

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