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JAMB Chemistry 1987 Question 34

Question 34

Halogens

Which of the following gases can best be used for demonstrating the fountain experiment?
(i) Nitrogen (ii) Ammonia (iii) Nitrogen (I) oxide (iv) Hydrogen chloride

  1. A.(ii) and (iii)
  2. B.(i) and (iii)
  3. C.(ii) and (iv)
  4. D.(ii) only.
Show the answer and explanation

Answer: C ((ii) and (iv))

Explanation

The fountain experiment needs a gas that is extremely soluble in water. Ammonia and hydrogen chloride both are; nitrogen and nitrogen (I) oxide are only slightly soluble.