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

In summary, when 2 ideal gas mix, there will be no temperature change, regardless of whether there is a chemical reaction or not. The final temperature will either be the same as the initial temperatures or somewhere in between, depending on the conditions and assumptions mentioned.
  • #1
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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  • #2
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.
 
  • #3
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
 

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

1. What is the relationship between temperature and pressure in an ideal gas?

The relationship between temperature and pressure in an ideal gas is known as the ideal gas law, which states that the pressure of an ideal gas is directly proportional to its temperature and the amount of gas present, and inversely proportional to its volume. This relationship can be expressed as PV = nRT, where P is pressure, V is volume, n is the number of moles, R is the gas constant, and T is temperature.

2. How does the temperature of an ideal gas affect its volume?

According to Charles's Law, the volume of an ideal gas is directly proportional to its temperature, assuming that pressure and amount of gas remain constant. This means that as the temperature of an ideal gas increases, its volume also increases, and vice versa.

3. What is the difference between absolute temperature and relative temperature?

Absolute temperature is a thermodynamic temperature scale where 0 K represents the lowest possible temperature, also known as absolute zero. This scale is used in scientific measurements. Relative temperature, on the other hand, is a scale where 0 degrees represents a reference point, such as the freezing point of water or the human body's normal temperature. This scale is commonly used in everyday life.

4. How does the temperature of an ideal gas affect the speed of its molecules?

According to the Kinetic Theory of Gases, the temperature of an ideal gas is directly proportional to the average kinetic energy of its molecules. This means that as the temperature of an ideal gas increases, the speed of its molecules also increases, and vice versa.

5. Can the temperature of an ideal gas ever reach absolute zero?

According to the Third Law of Thermodynamics, it is impossible for any system to reach absolute zero, as it would require infinite energy. However, scientists have been able to cool gases to extremely low temperatures, such as a few billionths of a degree above absolute zero, in laboratory settings.

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