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JAMB Chemistry 2008 Question 14

Question 14

Water

When a few drops of water is added to a blue anhydrous cobalt (II) chloride, the colour changes to

  1. A.white
  2. B.pink
  3. C.red
  4. D.blue.
Show the answer and explanation

Answer: B (pink)

Explanation

Anhydrous cobalt(II) chloride is blue and turns pink when it takes up water; this is a test for water.