7 votes

Why is there no temperature difference in the Joule expansion experiment?

if i have a piston and i pull on it really hard and this expands the isolated gas, i have no temperature difference? In the case of the moving piston, the molecules of the gas are striking a moving ...
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4 votes

Why is there no temperature difference in the Joule expansion experiment?

I like to think about these kinds of thermodynamic problems using kinetic theory and Newtonian mechanics, and not really worry about the ideal gas equation. If we look at problems this way, then ...
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2 votes
Accepted

Mixing identical gases in different states (Gibbs paradox)

Yes, it works without any problems. I’ll just add that you can do it all in one go by modifying the expression of your entropy: $$ S =nc_v\ln(T/T_0)+nR\ln\left(\frac{V/n}{ V_0/n_0}\right)+ns_0 $$ with ...
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1 vote
Accepted

An ideal gas expands into vacuum in an insulated rigid vessel. Which of the followings happens?

I think this could be their point of view, consider a rigid vessel with two chambers seperated by a partition. In this vessel, one of the chambers is filled with the ideal gas and the other chamber is ...
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1 vote

Why is there no temperature difference in the Joule expansion experiment?

The local cooling throughout the ideal gas taking place during this irreversible expansion is exactly offset by the local viscous heating of the gas (viscous stresses combined with high velocity ...
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1 vote

Why is there no temperature difference in the Joule expansion experiment?

We now can detect is a slight change in temperature of the air used in the Joule experiment that Joule was unable to detect. This is because a gas is not an ideal gas. Assuming the gas is ideal, ...
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1 vote

Why is there no temperature difference in the Joule expansion experiment?

The whole system is adiabatic, no heat exchange can take place The system also has no work done on it. The idea is that you just remove a partition and the gas freely expands. This is what defines ...
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  • 6,846
1 vote

What causes the volume of an ideal gas in a container that changes volume (like a balloon)?

The volume of an ideal gas is simply the volume of its container. That's because one of the assumptions for a gas to be considered ideal is that the total volume of the individual molecules is ...
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