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JAMB Chemistry 2012 Question 34

Question 34

Sulphur and its Compounds

Commercial bleaching can be carried out using

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

Answer: C (chlorine and sulphur(IV) oxide)

Explanation

Chlorine bleaches by oxidation and sulphur(IV) oxide by reduction; both are used as industrial bleaches.