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Non-ideal gas?

by Sleestak
Tags: nonideal
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Sleestak
#1
Jan31-14, 02:49 PM
P: 1
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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Borek
#2
Jan31-14, 03:28 PM
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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.


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