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Results tagged with pressure
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user 132126
For questions about gas pressure, or the effect of pressure in general on chemical species, substances, or reactions.
1
vote
Why is there a limit to the amount of water vapor in the air even though the atmosphere is s...
[OP] I have read that temperature and pressure dictate how much water vapor can exist in the air. … [OP] Air is a mixture, so shouldn’t the addition of water vapor just add to the mixture regardless the temperature and pressure? …
- 3,759
3
votes
What happens to pressure when a liquid goes supercritical?
Typically, isochores in a $p-T$ diagram are straight lines. This is evident in the ideal gas law, but also a prediction from the simple van der Waals' equation of state.
We put this to test using a mo …
- 3,759
13
votes
Accepted
Heat capacity of (ideal) gases at constant pressure
Classical Thermodynamics
[OP] I've come across this article which says that the constant pressure heat capacity is independent of pressure. … The residual heat capacity at constant pressure is a linear function of the pressure.
Higher the pressure, higher the deviations from the ideal gas heat capacity. …
- 3,759
2
votes
Use the first law of thermodynamics to derive the pressure as a function of T, U, V and N
It seems that the entropy function is for a thermodynamic system of a pure fluid. So let me:
Define $ s \triangleq S/N $ to have the entropy per molecule.
Multiply both sides for Avogadro's number $N …
- 3,759