For a substance that remains a gas under the conditions listed, deviation from the ideal gas law would be most pronounced at
A)100°C and 2.0 atm.
B)0°C and 2.0 atm.
C)-100°C and 2.0 atm.
D)-100°C and 4.0 atm.
E)100°C and 4.0 atm.

Question

Quizplus · Accepted Answer

According to the van der Waals equation, deviation from ideal behavior is most pronounced when both pressure and temperature are low. Choice D has the lowest temperature and a relatively high pressure, making it the best option.

For a Substance That Remains a Gas Under the Conditions