The vapor pressure of liquid heptane, C7H16, is 100. mm Hg at 315 K. A sample of
ID: 586879 • Letter: T
Question
The vapor pressure of liquid heptane, C7H16, is 100. mm Hg at 315 K. A sample of C7H16 is placed in a closed, evacuated 582 mL container at a temperature of 315 K. It is found that all of the C7H16 is in the vapor phase and that the pressure is 71.0 mm Hg. If the volume of the container is reduced to 382 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 108 mm Hg. Only heptane vapor will be present. Liquid heptane will be present. Some of the vapor initially present will condense.
Explanation / Answer
statements that are correct :
The pressure in the container will be 108 mm Hg
Liquid heptane will be present.
Some of the vapor initially present will condense.
Explanation :
here temperature is constant. so the pressure is inversely proportional to volume .
if volume is reduced , then pressure is increased. so some of the vapour will condensed.
so some liquid heptane is also present. some of the vapour initially will condense
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