this post was submitted on 18 Nov 2023
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Science Memes

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submitted 1 year ago by [email protected] to c/[email protected]
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[–] [email protected] 9 points 1 year ago (1 children)

Boiling point of water varies based on atmospheric pressure, water boils at a lower temperature high up in the mountains, for example, which could be why the estimated human body temperature is set as a standard, because it is consistent to reproduce as long as there are people around.

The freezing point of water is not affected by atmospheric pressure, however, it is affected by dissolved material in the water. Using a saturate solution of a salt would establish that consistency as well as lower the freezing point to create a bigger temperature range.

[–] Pok 1 points 1 year ago (1 children)

Does ammonium chloride brine not freeze at different pressures?

[–] [email protected] 3 points 1 year ago

A bit of mistake I made there, I should say that the freezing point is relatively unaffected by pressure compared to the boiling point, and the amount of dissolved impurities are going to have a greater effect.