Using the phase diagram of xenon, determine the pressure where sublimation would be impossible?

Question

amtran_bus · Answer

8 atm 

.5 atm 

.0045 atm 

9.2 x 10^-3 atm

amtran_bus · Answer

attachment

amtran_bus · Answer

@Mehek14 @pooja195 @Ashleyisakitty @Photon336

amtran_bus · Answer

@ShadowLegendX @Astrophysics @sweetburger @shamim

amtran_bus · Answer

I know sub is solid --> gas

sweetburger · Answer

The question is looking for you to identify at what pressure does the line of the phase diagram not directly link the solid phase to the vapor phase. Basically at what pressure could the solid not directly change to a vapor?

amtran_bus · Answer

At any specific temp?

sweetburger · Answer

I would ignore temperature when viewing this problem. Analyzing it won't help you too much. 
Besides that though when viewing the diagram sublimation can only occur from what looks like -130 C to -100C dependent on what the pressure is.

amtran_bus · Answer

So is it the one to the -3?

amtran_bus · Answer

Sorry if I'm wrong. It is just not clicking.

sweetburger · Answer

Ok let me draw you something real quick.

amtran_bus · Answer

Oh its 8 isn't it.

sweetburger · Answer

|dw:1467582773642:dw|
from .1atm to 1atm (possibly lower then .1atm)

sweetburger · Answer

"from .1atm to 1atm (possibly lower then .1atm)" includes the pressures at which sublimation can occur.

sweetburger · Answer

and yes you are correct

amtran_bus · Answer

Right, that is where it can go directly across the dividing line. I understand now. Thank so much for taking the time to draw that for me!

sweetburger · Answer

Yea np. Glad to help :)