- #1
Mitchtwitchita
- 190
- 0
Hey guys, I was wondering if anyone could help me out with this problem?
If you place 10.0L of methanol (CH4O) in a sealed room that is 3 m long, 1.75 m wide, and 2.5 m high, will all the methanol evaporate? If some liquid remains, how much will there be? The vapor pressure of methanol is 127 torr at 25 degrees C, and the density of the liquid at this temperature is 0.791 g/mL.
I'm not quite sure how to get this problem started.
I know that 127 torr = 127 mmHg/760 mmHg = 0.167 atm
and PV = (10.0 L)(0.167 atm) = 1.67 L*atm
and PV = nRT
n=PV/RT
=(0.167 atm)(10.0 L)/(0.0821 L*atm/K*mol)(298 K)
=0.0683 mol
but I'm not sure if I'm on the right track or how to fit these pieces together. could somebody please, please, please help me?
If you place 10.0L of methanol (CH4O) in a sealed room that is 3 m long, 1.75 m wide, and 2.5 m high, will all the methanol evaporate? If some liquid remains, how much will there be? The vapor pressure of methanol is 127 torr at 25 degrees C, and the density of the liquid at this temperature is 0.791 g/mL.
I'm not quite sure how to get this problem started.
I know that 127 torr = 127 mmHg/760 mmHg = 0.167 atm
and PV = (10.0 L)(0.167 atm) = 1.67 L*atm
and PV = nRT
n=PV/RT
=(0.167 atm)(10.0 L)/(0.0821 L*atm/K*mol)(298 K)
=0.0683 mol
but I'm not sure if I'm on the right track or how to fit these pieces together. could somebody please, please, please help me?