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JAMB Chemistry 1998 Question 37

Question 37

Qualitative Analysis

Which of the following is observed when a solution of iron (III) chloride is mixed with a solution of sodium hydroxide?

  1. A.A gas is evolved
  2. B.A deep blue precipitate is formed
  3. C.The resultant solution turns green
  4. D.A brown precipitate is formed
Show the answer and explanation

Answer: D (A brown precipitate is formed)

Explanation

Fe3+ ions react with OH− to give reddish-brown iron(III) hydroxide precipitate.