Gas in a syringe being compressed - thermodynamic processes

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SUMMARY

The discussion focuses on the thermodynamic processes involved in gas compression within a syringe, specifically detailing adiabatic compression, isochoric processes, and adiabatic expansion. Adiabatic compression occurs when gas is compressed quickly, resulting in no heat exchange with the environment (Q=0). Isochoric processes maintain constant volume, with heat loss during compression and heat gain upon release. The conversation also touches on the concept of thermal equilibrium, where the gas's volume increases and temperature returns to its initial state after being released.

PREREQUISITES
  • Understanding of thermodynamic processes, specifically adiabatic and isochoric processes.
  • Familiarity with the ideal gas law and its implications in compression and expansion.
  • Knowledge of thermal equilibrium and its effects on gas properties.
  • Basic principles of heat transfer and work done in thermodynamic systems.
NEXT STEPS
  • Study the principles of adiabatic processes in detail, including equations and applications.
  • Explore the ideal gas law and its relevance to real-world gas behavior in confined spaces.
  • Research thermal equilibrium and its significance in thermodynamic systems.
  • Examine practical applications of isochoric processes in engineering and physics.
USEFUL FOR

Students and professionals in physics, engineering, and thermodynamics, particularly those interested in gas behavior under compression and expansion scenarios.

domingoleung
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Homework Statement
1. When the gas in a syringe was quickly compressed for 10s, pressure and temperature increased initially. Finally, pressure and temperature decreased. When the gas was naturally released, the pressure and temperature decreased initally. Finally, the temperature increased. What thermodynamic processes were gone through by the system?

2. Explain briefly why the final pressure cannot return to the inital atmospheric pressure
Relevant Equations
PV=nRT
1.
Adiabatic compression (When compressed quickly, there is no heat flow to the environment Q=0)
Isochoric with heat loss (The syringe is still compressed, there should be no change in volume)
Adiabatic expansion (When the syringe is released, there is work done only)
Isochoric with heat gain (The syringe is released entirely, there should be no change in volume)2.
Still I have no idea :(
 
Physics news on Phys.org
What does naturally released mean?

When the syringe reaches thermal equilibrium with the surroundings, its volume is larger, right, and its temperature is back to the starting value?
 

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