Is it possible to have pure liquid water at negative 1 degree Celsius? and why?

Question

Is it possible to have pure liquid water at negative 1 degree Celsius? and why?

Answer 1

The freezing point of pure water is only zero Celsius at normal atmosheric pressure ( 1 bar or 1000mb).

If the atmospheric pressure increases then the freezing point will go down and lower than -1C.

Answer 2

Yes, if the water is under pressure its freezing point lowers.

Answer 3

It's not naturally possible, no - water freezes at 0 degrees celsius, so at -1 it would be ice.

I'm sure scientists have developed some spangly way of messing this around though!

Answer 4

In exceptional conditions in nature, if water is completely still, it can be cooled to below 0 while staying liquid. I've read about some people coming across such a lake high up in the mountains. It was well below the freezing, but the water in lake was not frozen. One of them threw a stone into the lake, and the moment it touched the surface, the whole lake froze in seconds!

Answer 5

Easy, all you have to do is to change the pressure of the room in which the water is situated. Just as if you take water to the top of a mountain where there is less atmosoheric pressure it will boil at far less than 100C, and take it down a mine shaft it will not  boil until it is far greater than 100C due to greater pressure, the same thing goes for freezing.

Answer 6

yes

Increased pressure will allow water to remain in the liquid state for temperatures as low as -22C

http://en.wikipedia.org/wiki/Water_%28mo...

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Answer 7

Yes, in the absence of nucleating agents (particles which promote the formation of crystals) water can remain liquid below the "freezing point."  Even at standard pressure it can be a "supercooled liquid" down to -42C.