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JAMB Chemistry 2009 Question 32

Question 32

Sulphur and its Compounds

Hydrogen sulphide gas can act as

  1. A.an oxidizing agent
  2. B.a dehydrating agent
  3. C.a bleaching agent
  4. D.a precipitating agent
Show the answer and explanation

Answer: D (a precipitating agent)

Explanation

H2S precipitates many metal ions as insoluble sulphides (it is used this way in qualitative analysis).