JAMB Chemistry 2012 Question 32

Question 32

Sulphur and its Compounds

A piece of filter paper moistened with lead(II) ethanoate solution turns black when the paper is dropped into a gas jar containing an unknown gas. The gas is likely to be

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

Answer: D (hydrogen sulphide.)

Explanation

H2S reacts with lead(II) ethanoate to form black lead(II) sulphide.