does the freezing point of water, under pressure, go up?

Question

since the boiling point goes up under pressure does the freezing go up conversly?

Answer 1

Yes. Water can freeze at 3.8 degrees.

Answer 2

If all holds true, then the freezing point would be lower. Because, The boiling point of water under pressure (like a radiator in a car) is higher, so conversely the freezing point should be lower under pressure.

Answer 3

No, and here's why.

The boiling point has to do with Daltons (Or is it Boyles?) law of gases and partial pressures. Since boiling is the liberation of Water into water vapor it is crucially determined BY atmospheric pressure. Which is why at altitude it takes longer to boil water (and the water is hotter).

Freezing, however has nothing to do with atmospheric pressure (beyond a certain point - obviously, by dramatically lowering pressure in a very short period of time you can cause a great deal of heat loss which can spontaneously cause freezing, but that's not, what I think, you are speaking of), and is instead temperature related only.

That's the laymans answer as far as I can remember.

Answer 4

Under pressure, the freezing point of water goes down. This is why ice skates work. The frozen ice melts under the pressure of the skate blade, proving a wet, slick surface on which you slide easily. You can pull a guitar string through a block of ice (VERY SLOWLY) and when you get the string to the other side, the ice block is still in one piece, because the ice which melted to let the string pass has all refrozen.

Answer 5

NOTE: The freezing point goes down under pressure (that is why ice skates work), which is counter-intuitive because you would think it should go up. Ice melts under pressure. Water is fairly unique in this respect. The scientific source I gave you is excellent and will answer all your questions.

Answer 6

someone has pointed out that you have to look at the phase diagram of the water . The slope of the melting point/freezing point is negative slope . So if you increases the pressure , its freezing point will DECREASE .

Answer 7

Yes for most substances the freezing point increases as pressure increases.

Answer 8

No, as you increase the pressure the required temperature to freeze is lower.

Answer 9

I don't know why I think this, but I think the freezing point goes down. It just seems right. If it boils easier, then it freezes more difficultly right?

Answer 10

Look at the phase diagram of water. If u have low temp & then u increase pressure, it will be solid. U can answer it better if u look at the PHASE DIAGRAM.