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Unilorin Post-UTME Chemistry 2022 (Model questions) Question 5

Question 5

Sulphur and its Compounds

Which of the following dry agents is NOT suitable for drying hydrogen sulphide?

  1. A.CaO
  2. B.P4O10
  3. C.CaCl2
  4. D.H2SO4
Show the answer and explanation

Answer: A (CaO)

Explanation

H2S is an acidic gas, so it would react with the basic drying agent CaO.