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JAMB Chemistry 2007 Question 31

Question 31

Gas Laws

Which of the following decreases when a given mass of gas is compressed to half its initial volume?

  1. A.Atomic radius of each particle.
  2. B.Average intermolecular distance.
  3. C.Frequency of collisions.
  4. D.Number of molecules present.
Show the answer and explanation

Answer: B (Average intermolecular distance.)

Explanation

Compressing a gas pushes the same number of molecules closer together, so the average distance between them falls; collisions actually become more frequent.