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JAMB Chemistry 1979 Question 43

Question 43

Sulphur and its Compounds

On oxidizing anhydrous iron (II) sulphate, in addition to producing iron (III) oxide, which of the following is produced?

  1. A.SO2(g) + FeS(s)
  2. B.SO3(g) + FeS(s).
  3. C.SO2(g) + SO3(g)
  4. D.SO2(g) + H2S(g)
  5. E.SO3(g) + H2S(g).
Show the answer and explanation

Answer: C (SO2(g) + SO3(g))

Explanation

Strong heating of anhydrous iron(II) sulphate gives 2FeSO4 → Fe2O3 + SO2 + SO3.