Solid compound with high vapor pressure compared to atmospheric pressure?

[RuffDay]

Can anyone explain to me why would this go through sublimation (solid to gas state)? In reference to the diagram in particular, if not then a simple explanation would be great as well. Thanks!

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[bodmon]

From my understanding when you have a liquid that has a high vapour pressure, it is readily vaporizing into the gas state. With a SOLID compound that has a high vapour pressure, it indicates that it is readily subliming. A regular process would require the fusion (melting) of the solid, then the vaporizing, which would show the higher vapour pressure.

a common example would be dry ice, since it sublimes from solid to gas without the intermediate liquid phase, so as a solid it would have a high vapour pressure

 

[teefdocta]

@bodmon was right. Simply relate it to a liquid compound that has a high vapor pressure (than atmospheric pressure), which means you can easily spot the vapor of the compound and the liquid has its state changed from liquid to gas. Referring back to a solid that have a vapor pressure higher than atmospheric pressure. You are now observing vapor escaping from its surface, thus it's solid state now is changing into gas phase. Sublimation is when a solid phase turns to gas phase.

 

[510586]

I think it's just easiest to look at a standard phase diagram. If you had higher vp to atm ratio (think of it as lowering atm I guess) then your product would move down from solid to gas, not to the right (solid to liquid) most of the time. Even though it could potentially become liquid