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JAMB Chemistry 1997 Question 33

Question 33

Halogens

In the diagram above the gas Y could be

Diagram for this question
  1. A.hydrogen chloride
  2. B.oxygen
  3. C.carbon (IV) oxide
  4. D.chlorine
Show the answer and explanation

Answer: A (hydrogen chloride)

Explanation

The set-up is a fountain experiment: water is forced up into the flask because the gas dissolves very quickly in it. Hydrogen chloride is extremely soluble in water; the other gases are not.