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JAMB Chemistry 2001 Question 41

Question 41

Halogens

When chlorine is passed into water and the resulting solution exposed to sunlight, the products formed are

  1. A.chlorine gas and hydrogen
  2. B.oxygen and oxochlorate (I) acid
  3. C.chlorine gas and oxochlorate (I) acid
  4. D.hydrochloric acid and oxygen
Show the answer and explanation

Answer: D (hydrochloric acid and oxygen)

Explanation

Chlorine water contains HOCl, which decomposes in sunlight: 2HOCl → 2HCl + O2. The products are hydrochloric acid and oxygen.