Multiple Choice
A sample of gas occupies 1000 mL at a pressure of 15 atm. If the gas is compressed to a volume of 500 mL at constant temperature, what is the new pressure of the gas?
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7. Gases
The Ideal Gas Law Applications
Multiple Choice
Under which conditions do real gases behave most like ideal gases?
A
At low temperature and low pressure
B
At low temperature and high pressure
C
At high temperature and low pressure
D
At high temperature and high pressure
Verified step by step guidance1
Recall that ideal gas behavior assumes no intermolecular forces and that gas particles occupy no volume.
Understand that at high temperatures, gas particles have enough kinetic energy to overcome intermolecular attractions, making the gas behave more ideally.
Recognize that at low pressures, gas particles are far apart, so the volume of individual particles and intermolecular forces have less effect.
Combine these ideas to conclude that gases behave most like ideal gases at high temperature and low pressure.
Therefore, the correct condition for real gases to behave most like ideal gases is at high temperature and low pressure.
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