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

AI Thread Summary
Water can change its phase by altering temperature or pressure, as indicated by its phase diagram. In a vacuum, room temperature water will boil, transitioning from liquid to gas. However, solidification of water requires extremely high pressure, which is not achievable under normal conditions. The phase diagram provides essential pressure-temperature combinations that illustrate these changes. Understanding these principles is crucial for manipulating water's state effectively.
ForumFire
Messages
16
Reaction score
0
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.
 
Physics news on Phys.org
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
 
Last edited by a moderator:
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. :biggrin:
 
Last edited by a moderator:

Thread '1:1 versus 2:1 Mechanical Advantage debate'

The rope is tied into the person (the load of 200 pounds) and the rope goes up from the person to a fixed pulley and back down to his hands. He hauls the rope to suspend himself in the air. What is the mechanical advantage of the system? The person will indeed only have to lift half of his body weight (roughly 100 pounds) because he now lessened the load by that same amount. This APPEARS to be a 2:1 because he can hold himself with half the force, but my question is: is that mechanical...
View full post »

Thread 'Newton's first law?'

Some physics textbook writer told me that Newton's first law applies only on bodies that feel no interactions at all. He said that if a body is on rest or moves in constant velocity, there is no external force acting on it. But I have heard another form of the law that says the net force acting on a body must be zero. This means there is interactions involved after all. So which one is correct?
View full post »
Thread 'Beam on an inclined plane'

Thread 'Beam on an inclined plane'

Hello! I have a question regarding a beam on an inclined plane. I was considering a beam resting on two supports attached to an inclined plane. I was almost sure that the lower support must be more loaded. My imagination about this problem is shown in the picture below. Here is how I wrote the condition of equilibrium forces: $$ \begin{cases} F_{g\parallel}=F_{t1}+F_{t2}, \\ F_{g\perp}=F_{r1}+F_{r2} \end{cases}. $$ On the other hand...
View full post »

Similar threads

Does pressure affect the shape of water drops according to Gibb's phase rule?
Replies
2
Views
1K
Does ice melt faster in water because helps to change the phase
Replies
6
Views
2K
I Find Best Water Nozzle Type & Pressure for Longest Distance
Replies
32
Views
9K
How Does Pressure Affect the Boiling Point of Water?
Replies
2
Views
7K
Is cavitation worse at depth? (Fluid pressure and Vapor pressure boiling)
Replies
4
Views
3K
How pressure affects partial pressures (and dewpoint)
Replies
10
Views
2K
Flow of air through an open tube with a balloon
Replies
9
Views
3K
How much liquid water do I need to get a relative humidity of 10%?
Replies
9
Views
2K
Pressure in Gases: Boiling Water in a Can Explained
Replies
3
Views
2K
How Does Pressure Affect Dissolved Oxygen in Water Systems?
Replies
4
Views
2K

Hot Threads

Recent Insights

Back
Top