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JAMB Chemistry 1987 Question 7

Question 7

Gas Laws

If d represents the density of a gas and K is a constant, the rate of gaseous diffusion r is related to d by the equation

  1. A.r = k/√d
  2. B.r = kd
  3. C.r = k/d
  4. D.r = k√d
Show the answer and explanation

Answer: A (r = k/√d)

Explanation

Graham's law: the rate of diffusion is inversely proportional to the square root of the density, so r = k/√d.