- #1
MichaelWiteman
- 10
- 1
Hi,
Joule's original gas expansion experiment is often presented like in the following link:
http://demonstrations.wolfram.com/JouleExperimentOnFreeExpansion/
The apparent lack of temperature change in this experiment is often used in textbooks to demonstrate that the energy of an ideal gas is only temp. dependent. It is, however, often mentioned that a non-negligible change in temp. for real gases occurs because of intermolecular interactions.
My question: wouldn't temp. change (decrease) also for the ideal case? After all the expanding gas will be doing work against the pressure that is being created in the right chamber? Am I missing something?Mike
Joule's original gas expansion experiment is often presented like in the following link:
http://demonstrations.wolfram.com/JouleExperimentOnFreeExpansion/
The apparent lack of temperature change in this experiment is often used in textbooks to demonstrate that the energy of an ideal gas is only temp. dependent. It is, however, often mentioned that a non-negligible change in temp. for real gases occurs because of intermolecular interactions.
My question: wouldn't temp. change (decrease) also for the ideal case? After all the expanding gas will be doing work against the pressure that is being created in the right chamber? Am I missing something?Mike