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JAMB Chemistry 1983 Question 39

Question 39

Sulphur and its Compounds

A gas that can behave as a reducing agent towards chlorine and as an oxidizing agent toward hydrogen sulphide is

  1. A.O2
  2. B.NO
  3. C.SO2
  4. D.NH3
  5. E.CO2
Show the answer and explanation

Answer: C (SO2)

Explanation

Sulphur in SO2 is +4: chlorine oxidises it to sulphate (+6), but it oxidises H2S to sulphur and is itself reduced to sulphur (0).