Is it possible to figure out the vapour pressure on the phase diagram of water?

Consider the phase diagram that looks like a Y or lamba symbol. Is it possible to figure out the vapour pressure at any given temperature? For people who know physical chemistry stuff, it should be straight forward. It's not a trick question, I just want to see if my logic is correct!Is it possible to figure out the vapour pressure on the phase diagram of water?
The vapor pressure at a particular temperature is the line dividing the gas phase from whichever phase above it, either ice or liquid water. If you're at some T/P that is not on the phase boundary, drop a vertical line down to the x-axis and the point where it crosses the phase boundary is the vapor pressure.


Is it possible to figure out the vapour pressure on the phase diagram of water?
By definition once you are above the critical point, vapor pressure becomes undefined. One consequence of this is that the latent heat of vaporization is zero at, or above, the critical point. Report Abuse