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JAMB Chemistry 1980 Question 13

Question 13

Gas Laws

Which of the following statements is an exception in the assumptions of the kinetic theory of gases?

  1. A.Gases are composed of many elastic particles
  2. B.The particles are of negligible size
  3. C.The particles are in constant random motion
  4. D.The particles are of negligible mass
  5. E.The particles collide with each other.
Show the answer and explanation

Answer: D (The particles are of negligible mass)

Explanation

Kinetic theory treats gas particles as having negligible volume, not negligible mass; their mass is what gives them kinetic energy and momentum.