Transition metals + ammonia & NaOH - Edexcel chemistry a2

Hello guys, this is a quiz about PERCIPITATE COLOURS for reactions of transition metals with OH- and NH3, as well as in water. It is specifically suited to the Edexcel A2 unit 5 specification (chemsitry) but can be used for any. :)

N.B. the colours vary according to what textbook you use, I've used the ones in the official Edexcel textbook rather than the revision guide. 

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  • Created by: Mirte
  • Created on: 07-06-14 11:24

1. What is observed when Iron (II) reacts with sodium hydroxide or NH3?

  • Green precipitate
  • Blue precipitate
  • Green precipitate which redissolves to form a green solution
  • Brown precipitate
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Other questions in this quiz

2. What is the colour and formula of the Mn2+ ion in water?

  • Blue, [Mn(H2O)6]3+
  • Green, [Mn(H2O)6]2+
  • Pink, [Mn(H2O)6]2+
  • Violet, [Mn(H2O)2(OH)4]2-

3. What is the formula of Copper (II) when excess ammonia is added?

  • [Cu(NH3)3(H2O)3]3+
  • [Cu(NH3)4(H2O)2]2+
  • [Cu(NH3)2(H2O)4]2+
  • [Cu(NH3)4(H2O)2]3+

4. The order of Chronium observations in reactions with 1)water 2)OH- and NH3 3)Excess OH- 4)Excess NH3 is.....

  • 1violet solution 2violet ppt 3no change 4no change
  • 1violet solution 2violet ppt 3green ppt 4yellow solution
  • 1violet solution 2violet ppt 3green solution 4yellow solution
  • 1pink solution 2blue ppt 3green solution 4yellow solution

5. Reaction of Iron (III) with ammonia produces a...

  • Blue solution
  • Yellow precipitate
  • Brown precipitate
  • Green precipiate

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