The vapor pressure of liquid hexane, C_6 H_14, is 40.0 mm Hg at 271 K. A sample
ID: 1066074 • Letter: T
Question
The vapor pressure of liquid hexane, C_6 H_14, is 40.0 mm Hg at 271 K. A sample of C_6 H_14 is placed in a closed, evacuated container of constant volume at a temperature of 400 K. It is found that all of the C_6 H_14 is in the vapor phase and that the pressure is 74.0 mm Hg. If the temperature in the container is reduced to 271 K, which of the following statements are correct? Choose all that apply. Liquid hexane will be present. Some of the vapor initially present will condense. Only hexane vapor will be present. No condensation will occur. The pressure in the container will be 50.1 mm Hg.Explanation / Answer
Because at 271 K liquid is in equilibirum with its vapour phase,
Some of the vapour initially present will condense to liquid state
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