Will Mixing Ideal Gases at the Same Temperature Cause a Temperature Change?

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SUMMARY

Mixing two ideal gases at the same temperature results in no temperature change, as there is no chemical reaction involved. If the gases are at different temperatures, the final temperature of the mixture will be an average of the two initial temperatures. This conclusion holds true under the assumption that the total volume of the mixture equals the sum of the original volumes, with no external heat exchange or work done on the system. Therefore, ideal gas behavior dictates that temperature remains constant when mixed at the same initial temperature.

PREREQUISITES
  • Understanding of ideal gas laws
  • Basic principles of thermodynamics
  • Knowledge of temperature measurement and scales
  • Familiarity with chemical reaction dynamics
NEXT STEPS
  • Study the Ideal Gas Law and its applications
  • Explore thermodynamic principles related to heat transfer
  • Investigate the effects of mixing gases at varying temperatures
  • Learn about chemical reaction thermodynamics and enthalpy changes
USEFUL FOR

Students of chemistry and physics, educators teaching thermodynamics, and professionals in fields involving gas mixtures and reactions will benefit from this discussion.

Outrageous
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When 2 ideal gas mix, there will be no temperature change. Is that because there will not be any chemical reaction occur, so no temperature change?
thank
 
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Outrageous said:
When 2 ideal gas mix, there will be no temperature change. Is that because there will not be any chemical reaction occur, so no temperature change?
thank

If they are at different temperatures when you mix them, and there is no chemical reaction, the temperature of the mixture will be different than the two temperatures they had before you mixed them. That temperature will be somewhere in between the two.

That means, if they are at the same temperature when you mix them, and there is no chemical reaction, the final temperature will be the same as the initial temperatures.

There may or may not be a chemical reaction. If there is a chemical reaction, then figuring the final temperature is more complicated.

This all assumes that the volume of the mixture is the sum of the original volumes and that no heating or cooling is done from the outside and they don't do any work on each other or the outside and no particles are gained from or lost to the outside.
 
Rap said:
That means, if they are at the same temperature when you mix them, and there is no chemical reaction, the final temperature will be the same as the initial temperatures..

Exactly what I want to ask . Thank you
 

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