The vapor pressure of liquid pentane , C 5 H 12 , is 100 . mm Hg at 260 K. A sam
ID: 886998 • Letter: T
Question
The vapor pressure of liquid pentane, C5H12, is 100. mm Hg at 260 K.
A sample of C5H12 is placed in a closed, evacuated 599 mL container at a temperature of 260 K. It is found that all of the C5H12 is in the vapor phase and that the pressure is 52.0 mm Hg. If the volume of the container is reduced to 324 mL at constant temperature, which of the following statements are correct?
Choose all that apply.
No condensation will occur.
The pressure in the container will be 100. mm Hg.
Only pentane vapor will be present.
Some of the vapor initially present will condense.
Liquid pentane will be present.
Explanation / Answer
Pressure is inversely proportional to volume.
so as the volume of liquid pentane decreased so that pressure increases.
so tht condensation occurs and some of the vapor initially present will condense and liquid pentane will be present.
so options 2, 4, 5 apply.
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