Can gas pressure and density be reduced without changing temperature?

Click For Summary
SUMMARY

This discussion centers on the methods to reduce gas pressure and density while maintaining a constant temperature, specifically using argon gas as an example. Key techniques include utilizing a vacuum chamber larger than the gas's original volume and employing a cylinder with a moving piston to manipulate volume. The importance of achieving thermal equilibrium during these processes is emphasized, indicating that volume adjustments directly impact pressure and density without altering temperature.

PREREQUISITES
  • Understanding of gas laws, particularly Boyle's Law
  • Familiarity with thermal equilibrium concepts
  • Knowledge of vacuum chamber construction and operation
  • Basic principles of piston-cylinder systems in thermodynamics
NEXT STEPS
  • Research the application of Boyle's Law in real-world scenarios
  • Learn about the design and functionality of vacuum chambers
  • Explore the mechanics of piston-cylinder systems in gas compression
  • Investigate methods for achieving thermal equilibrium in gas systems
USEFUL FOR

Students in physics or engineering, laboratory technicians, and professionals involved in gas manipulation and thermodynamics will benefit from this discussion.

mishima
Messages
576
Reaction score
43
I'm curious from a lab sort of perspective, how does one keep a gas at a constant temperature yet decrease both pressure and density? Like how could I reduce the pressure of argon gas with the gas kept at room temperature? Put it in a vacuum larger than the space it normally occupies or something? How is that constructed?
 
Science news on Phys.org
Yes, you have to change the volume (or the amount of argon). Then you may have to wait for thermal equilibrium.
What about a cylinder with a moving piston?
 

Similar threads

  • · Replies 5 ·
Replies
5
Views
4K
  • · Replies 60 ·
3
Replies
60
Views
11K
  • · Replies 35 ·
2
Replies
35
Views
6K
  • · Replies 22 ·
Replies
22
Views
6K
  • · Replies 4 ·
Replies
4
Views
2K
  • · Replies 3 ·
Replies
3
Views
3K
  • · Replies 1 ·
Replies
1
Views
3K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 2 ·
Replies
2
Views
3K
  • · Replies 2 ·
Replies
2
Views
2K