How much pressure does water have to be in for it to phase change

[ForumFire]

I was wondering if it was possible to put water in a tube, and either add air pressure or put it in a vacuum and changee it's phase change? I herd at wikipediea that you can change the state of matter somthing is in by either changing the tempature or pressure that it's in.

 

[russ_watters]

Well, if you take room temperature water and put it in a vacuum, it'll boil, yes. It won't solidify without extrordinarily high pressure, though. Check the phase diagram: http://www.lsbu.ac.uk/water/images/phase.gif

 

[Integral]

You need to study a http://www.lsbu.ac.uk/water/phase.html" for water. This shows you pressure temperature combinations and the resulting phase.

Russ types faster then I do! beat by 1 minute.