A sample of C2H5SH is placed in a closed, evacuated 592 mL container at a temper
ID: 1065273 • Letter: A
Question
A sample of C2H5SH is placed in a closed, evacuated 592 mL container at a temperature of 260 K. It is found that all of the C2H5SH is in the vapor phase and that the pressure is 61.0 mm Hg. If the volume of the container is reduced to 314 mL at constant temperature, which of the following statements are correct?
No condensation will occur.
The pressure in the container will be 115 mm Hg.
Liquid ethane thiol will be present.
Some of the vapor initially present will condense.
Only ethane thiol vapor will be present.
Explanation / Answer
decreasing the volume at constant temperature, increases the pressure.
V1/ V2 = P2/P1
P2 = 592 ml /314 ml x 61.0 mm Hg = 115 mm Hg
condensation surely occurs but there will be limit .
So, the correct answers are
The pressure in the container will be 115 mm Hg.
Liquid ethane thiol will be present.
Some of the vapor initially present will condense