Deviation from ideal gas behavior?

Which set of temperature and pressure conditions will cause a gas to exhibit the greatest deviation from ideal gas behavior?

a) 100 degrees C and 4 atm

b) 100 degrees C and 2 atm

c) -100 degrees C and 4 atm

d) 0 degrees C and 2 atm

The book gives me the final answer, but can someone explain why this is the case?

1 Answer

  • Ideal gas behavior is at High Temperature, and Low Pressure, or HoT LiPs for a mnemonic. THe greatest deviations would be at low temp, and high pressure. This is because particles will move slowly and collide more often, thus reducing the total energy. Also, the volume of the particles will become more significant.

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