ideal gas law?

Question

For which of the following situations is the ideal gas equation likely to be least accurate?

a. He at 0.001 atm and 500 K

b. Ne at 1 atm and 500 KAr at 1 atm and 350 K

c. Kr at 10 atm and 300 K

d. Xe at 100 atm and 200 K

Answer 1

d. Xe at 100 atm and 200 K

Both high pressure and low temperature cause the assumptions made in the ideal gas law to lose their validity.