How Do Gases Reach Thermal Equilibrium in a Closed Adiabatic Cylinder?

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Homework Help Overview

The discussion revolves around a problem involving a closed, rigid, adiabatic cylinder containing hydrogen and oxygen gases, where the gases are separated by a piston. The original poster seeks to understand how the gases reach thermal equilibrium, specifically asking about final temperature, pressure, volume, and work done.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants discuss the initial conditions of the gases, including temperature and pressure. There are inquiries about determining the final temperature and pressure, as well as the number of moles of each gas. Some suggest considering heat capacity and the thermodynamic properties of the gases.

Discussion Status

The discussion is ongoing, with participants exploring various aspects of the problem. Some guidance has been offered regarding the initial conditions and the need to consider thermodynamic principles, but no consensus has been reached on the final outcomes.

Contextual Notes

There is mention of the problem being posted in the homework section, indicating it is part of a homework assignment. The original poster's repeated requests for direction suggest a need for clarification on the concepts involved.

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Can someone provide me some direction with this problem?

A closed, rigid, adiabatic cylinder contains one liter of hydrogen gas(H2) at 276.85 degrees celsius and pressure of 400kPa and one liter of oxygen gas (O2) at temperature 26.85 degrees celsius. The two gases are separated by a mass-less, frictionless piston through which heat is transferred until the two sides are in thermal equilibrium.
What is final temperature?
What is final pressure?
What is the final volume of helium gas?
How much work is done on or by the helium gas?-------------------------------------
H2 | O2 |
1 liter |1 liter |
400kPa | 400kPa |
276.85 degrees C |26.85 degrees C |
-------------------------------------
 
Last edited:
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Can someone provide me some direction with this problem?

Yep, put it in the HW section! (points up above).
 
i can't figure out how to delete this post to move it
 
Dont worry, someone will move it for you. :wink:
 
evotunedscc said:
Can someone provide me some direction with this problem?

A closed, rigid, adiabatic cylinder contains one liter of hydrogen gas(H2) at 276.85 degrees celsius and pressure of 400kPa and one liter of oxygen gas (O2) at temperature 26.85 degrees celsius. The two gases are separated by a mass-less, frictionless piston through which heat is transferred until the two sides are in thermal equilibrium.
What is final temperature?
What is final pressure?
What is the final volume of helium gas?
How much work is done on or by the helium gas?-------------------------------------
H2 | O2 |
1 liter |1 liter |
400kPa | 400kPa |
276.85 degrees C |26.85 degrees C |
-------------------------------------
Determine the initial pressure of the O2 and the number of moles of each gas. Do you know how to determine what the final temperature will be? (think heat capacity). From that determine the final volumes.

Hint: Is there a material difference between the two gases from the point of view of thermodynamics? What will the total volume be?

AM
 
Last edited:

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