Multiple Choice
According to the kinetic molecular theory, the molecules in which of the following samples have the greatest average molecular kinetic energy?
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7. Gases
Kinetic Molecular Theory
Multiple Choice
Which of the following conditions increases the tendency of a real gas to behave ideally according to the kinetic molecular theory?
A
High temperature and low pressure
B
Low temperature and high pressure
C
High temperature and high pressure
D
Low temperature and low pressure
Verified step by step guidance1
Recall that the kinetic molecular theory describes ideal gases as particles with negligible volume and no intermolecular forces, moving randomly and colliding elastically.
Understand that real gases deviate from ideal behavior mainly due to intermolecular attractions and the finite volume of gas particles, which become significant at low temperatures and high pressures.
Recognize that increasing temperature gives gas particles more kinetic energy, helping them overcome intermolecular attractions, thus making the gas behave more ideally.
Recognize that decreasing pressure increases the volume and distance between gas particles, reducing the effect of their finite size and intermolecular forces, which also promotes ideal behavior.
Combine these insights to conclude that high temperature and low pressure conditions increase the tendency of a real gas to behave ideally according to the kinetic molecular theory.
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