Chemical Forums
Chemistry Forums for Students => Undergraduate General Chemistry Forum => Topic started by: raorian on November 11, 2016, 04:48:56 AM
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I have some follow-up questions but first this clarification.
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Yes. Interestingly, one thing only becomes solid at high pressure. Do you know another process to solidify anything? And do you know the one thing that requires high pressure to solidify, and why?
Sorry to ask a bunch of questions, but that's what we do here. We want to help you learn to help yourself. Its all in the Forum Rules{click} (http://www.chemicalforums.com/index.php?topic=65859.0).
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your statements are contradictory or you confused a word or two.
Yes = ALL substances become solids under extreme pressure.
Interestingly (implying an exception), on thing becomes solid at high pressure. I assume you meant One thing becomes liquid, and I assume it's water. Please correct me if I'm wrong.
Another process is obviously reducing the temperature.
I don't understand your statements. You sound smart because of your syntax though. please explain yourself.
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(...) Interestingly (implying an exception), on thing becomes solid at high pressure. (...)
let me put it like this: there is a reason WHY he wrote
Interestingly, one thing only becomes solid at high pressure.
(meaning: this stuff is an exception to the rule of thumb, that everything sooner or later will freeze to a solid if you just cooled it enough, even without applying pressure)
... and no, he wasn't referring to water.
regards
Ingo
@ Arkcon:
(...), and why?
there are some trivial answers which seem to be false in this case
... and a lot of research still goin' on in understanding the solidification of suprafluid bose-einstein-condensates (which is the more precise description of the respective liquid)
what exactly did you have in mind?
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your statements are contradictory or you confused a word or two.
Sorry.
Yes = ALL substances become solids under extreme pressure.
Yep. I filled that in for you.
Interestingly (implying an exception), on thing becomes solid at high pressure.
Nope. Not the exception I meant.
I assume you meant One thing becomes liquid, and I assume it's water. Please correct me if I'm wrong.
Nope. Not really the point I was going for.
Another process is obviously reducing the temperature.
Yes. Good work. I meant it was interesting that there's one substance that can't be solidified by lowing temperature, you have to use pressure in addition.
I don't understand your statements. You sound smart because of your syntax though. please explain yourself.
Maybe it will all come together as the original question expands.
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[...] suprafluid bose-einstein-condensates [...]
Is the Bose-Einstein-condensation still considered as an explanation for superfluidity? Or is it more a tradition among books and courses?
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It'll be some time until I figure out the bose-einstein thing
Could you just answer the question, though?
If I add pressure to (any) a gas or liquid will it eventually become solid?
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This also depends on temperature.
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I am fully aware it also depends on temperature.
BUT
In high temperature,
and in very very very high pressure,
Will I always get a solid?
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Now this last question is very general, but we don't have to be general, we can describe the states of any substance at any temperature and pressure. We call this a phase diagram: https://en.wikipedia.org/wiki/Phase_diagram Here's one for water
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You can see, at higher temperatures, it requires more and more pressure to maintain ice.
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actually from this graph, which I remember (I learned this 7 years ago haha), at 100 degrees celsius and infinite pressure I'd receive liquid.
correct me if I'm wrong.
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Neither liquid nor gas - supercitical fluid.
https://www.wikiwand.com/en/Supercritical_fluid
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[...] suprafluid bose-einstein-condensates [...]
Is the Bose-Einstein-condensation still considered as an explanation for superfluidity? Or is it more a tradition among books and courses?
I don't know if suprafluidity in general is considered to be a feature of liquid bose -einstein-condensates
however, last time I checked some respective literature , liquid He was considered to be a bose-einstein - condensate
... and it shows suprafluidity, amongst some other strange features (unusual high compressibility and so on... ).
hence my respective question @ Arkcon
regards
Ingo
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actually from this graph, which I remember (I learned this 7 years ago haha), at 100 degrees celsius and infinite pressure I'd receive liquid.
correct me if I'm wrong.
pls. take a look at the broader graph of the phase diagram of water:
(https://upload.wikimedia.org/wikipedia/commons/thumb/3/33/Phase_diagram_of_water_simplified.svg/langde-400px-Phase_diagram_of_water_simplified.svg.png)
( Eis = ice , Wasser = (liquid)water , Dampf = steam )
as you see, you're wrong.
regards
Ingo