Timeline for Behavior beyond the critical pressure [closed]
Current License: CC BY-SA 4.0
10 events
| when toggle format | what | by | license | comment | |
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| S Mar 14, 2019 at 0:26 | history | closed |
Todd Minehardt Mithoron Soumik Das Tyberius♦ A.K. |
Needs more focus | |
| S Mar 14, 2019 at 0:26 | comment | added | A.K. | Possible duplicate of Why must both the critical temperature and pressure be exceeded to achieve the supercritical phase? | |
| Mar 13, 2019 at 22:25 | comment | added | Jon Custer | Often, the term used past the critical point is ‘fluid’. | |
| Mar 12, 2019 at 13:12 | answer | added | SteffX | timeline score: 0 | |
| Mar 12, 2019 at 2:55 | review | Close votes | |||
| Mar 14, 2019 at 0:26 | |||||
| Mar 12, 2019 at 0:56 | comment | added | B. Kelly | To answer the questions on your diagram, the vapor in that region is still a gas, but is often referred to as superheated. The liquid is still a liquid but is referred to as a compressed liquid. On the phase line, there is just enough pressure to form a liquid... if pressure was decreased some of the liquid would become a vapor.. In the compressed region there is so much pressure that you could decrease the pressure, and it would still stay a liquid... this is a (overly)simple way of thinking about it. | |
| Mar 12, 2019 at 0:50 | comment | added | B. Kelly | I like the second image you linked, that describes how I think of the supercritical region. | |
| Mar 12, 2019 at 0:45 | comment | added | B. Kelly | All that really happens at the critical point is that the liquid and vapor have the same properties. I prefer T-v diagrams myself, then you can see clearly that at the critical point (and above) the densities of the liquid and vapor converge and only one "phase" exists. It is not accurate to call it a liquid or a vapor ... it would be closest to a dense vapor I guess. I don't like your diagram as it seems to insinuate there are phase boundaries above the critical point. Dotted lines would be better to distinguish the supercritical fluid from the vapor or compressed liquid phases. | |
| Mar 12, 2019 at 0:35 | review | First posts | |||
| Mar 12, 2019 at 2:36 | |||||
| Mar 12, 2019 at 0:32 | history | asked | Nutmeg | CC BY-SA 4.0 |