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JAMB Chemistry 1999 Question 9

Question 9

Kinetic Theory and States of Matter

In which of the following are water molecules in the most disorderly arrangement?

  1. A.Ice at −10°C
  2. B.Ice at 0°C
  3. C.Water at 100°C
  4. D.Steam at 100°C.
Show the answer and explanation

Answer: D (Steam at 100°C.)

Explanation

Gas molecules move freely and randomly, so steam is more disordered than liquid water or ice at any of these temperatures.