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JAMB Chemistry 2005 Question 40

Question 40

Sulphur and its Compounds

The gas that can be dried using concentrated tetraoxosulphate (VI) acid is

  1. A.hydrogen bromide
  2. B.sulphur (IV) oxide
  3. C.hydrogen sulphide
  4. D.ammonia
Show the answer and explanation

Answer: B (sulphur (IV) oxide)

Explanation

Concentrated H2SO4 reacts with ammonia (a base) and oxidises HBr and H2S, but does not react with acidic SO2, so it can dry SO2.