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JAMB Chemistry 1980 Question 40

Question 40

Halogens

The best way of collecting chlorine is

  1. A.by downward displacement of air
  2. B.by upward displacement of air
  3. C.over water
  4. D.under water
  5. E.over mercury
Show the answer and explanation

Answer: B (by upward displacement of air)

Explanation

Chlorine is denser than air and dissolves in water, so it is delivered to the bottom of the jar, pushing the air upwards (upward displacement of air). It also attacks mercury.