Can a Gas Remain the Same Temp When Compressed?

In summary, the conversation discusses a multiple choice question in chemistry regarding the statement that when a gas is compressed, its temperature always increases. The participants debate whether this statement is true or not, with one person questioning if there could be a case where a gas remains the same temperature or even cools when compressed. The other person explains that it depends on how the gas is compressed, with the possibility of it equilibrating with the outside temperature and not increasing in temperature.
  • #1
Sleestak
5
0
So today I came across this question:
2) CHEMISTRY Multiple Choice Which of the following statements is NOT true:

W) an ideal gas cannot undergo condensation
X) the less mass a particle has, the faster it will effuse
Y) when a gas is compressed, its temperature always increases
Z) a gas is easier to compress than a liquid

ANSWER: Y) WHEN A GAS IS COMPRESSED, ITS TEMPERATURE ALWAYS INCREASES

I just can't think of a case where this would be false. Is it possible for a gas to remain the same temperature or even cool when it is compressed?
 
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  • #2
It depends on whether you compress the gas adiabatically or not. If you compress it infinitely slowly is will equilibrate with the outside temperature and its temperature will not increase.
 

1. Can a gas remain at the same temperature when compressed?

No, when a gas is compressed, its molecules are forced closer together, which increases their kinetic energy and results in an increase in temperature.

2. Why does compressing a gas increase its temperature?

When a gas is compressed, the molecules are forced closer together, which increases their kinetic energy and causes them to collide more frequently and with greater force. This increased energy and collision rate result in an increase in temperature.

3. Is it possible for a gas to remain at the same temperature while being compressed?

No, it is not possible for a gas to remain at the same temperature while being compressed. This is due to the laws of thermodynamics, which state that energy cannot be created or destroyed, only transferred. When a gas is compressed, its kinetic energy increases and results in an increase in temperature.

4. What happens to the temperature of a gas when it is compressed?

The temperature of a gas increases when it is compressed. This is because the molecules are forced closer together, which increases their kinetic energy and results in an increase in temperature.

5. Can the temperature of a gas be reduced while it is being compressed?

No, the temperature of a gas cannot be reduced while it is being compressed. This is due to the laws of thermodynamics, which state that energy cannot be created or destroyed, only transferred. When a gas is compressed, its kinetic energy increases and results in an increase in temperature.

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