The vapor pressure of liquid octane, C8H18, is 100. mm Hg at 339 K. A sample of
ID: 477226 • Letter: T
Question
The vapor pressure of liquid octane, C8H18, is 100. mm Hg at 339 K. A sample of C8H18 is placed in a closed, evacuated 518 mL container at a temperature of 339 K. It is found that all of the C8H18 is in the vapor phase and that the pressure is 61.0 mm Hg. If the volume of the container is reduced to 373 mL at constant temperature, which of the following statements are correct? Choose all that apply.
a. No condensation will occur.
b. Some of the vapor initially present will condense.
c. The pressure in the container will be 100. mm Hg.
d. Only octane vapor will be present.
e.Liquid octane will be present.
Explanation / Answer
which of the following statements are correct? Choose all that apply.
a. No condensation will occur.
b. Some of the vapor initially present will condense.--------answer
c. The pressure in the container will be 100. mm Hg.
d. Only octane vapor will be present.------------------------------answer
e.Liquid octane will be present.
P2 =(v2/v1) x 61 mmHg =
P2 =(518/373) x 61 mmHg =84.71 mmHg
Compare this with gas pressure to the actual pressure
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