Naked Science Forum
Non Life Sciences => Physics, Astronomy & Cosmology => Topic started by: chris on 31/01/2023 11:58:52
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Water under a lower pressure boils at a lower temperature because the lower pressure makes it easier for molecules to gain sufficient energy from the liquid to sever the intermolecular forces within the fluid and escape as a vapour. But what happens to the freezing point?
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At a reduced pressure the freezing point rises slightly. (At most, roughly 0.01 degrees C)
For most materials (those which contract on freezing) the freezing point would reduce .
It's an example of this
https://en.wikipedia.org/wiki/Le_Chatelier%27s_principle
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https://naeye.net/wp-content/uploads/2021/01/water_phase_diagram.jpg
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Dare I ask why this phenomenon occurs?
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Dare I ask why this phenomenon occurs?
Apparently.
And to an extent the answer is
https://en.wikipedia.org/wiki/Le_Chatelier%27s_principle
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Fun news item this morning. Apparently University College London have made (or discovered) a disordered state of ice by milling the regular stuff into a glassy solid with a density of 1.0.