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JAMB Chemistry 1987 Question 35

Question 35

Nitrogen and its Compounds

When calcium hydroxide is heated with ammonium tetraoxosulphate (VI), the gas given off may be collected by

  1. A.bubbling it through concentrated H2SO4
  2. B.bubbling it through water and then passing it through calcium oxide
  3. C.passing it directly through calcium oxide
  4. D.passing it directly through calcium chloride.
Show the answer and explanation

Answer: C (passing it directly through calcium oxide)

Explanation

The gas is ammonia. It is dried with calcium oxide. It reacts with concentrated H2SO4 and with calcium chloride, and it dissolves in water.