transition metals

Goes briefly through most sections of transition metals-hope it helps in your revision!

sorry about the weird notation of substances!- I have used ^ for any charges, some of the incorrect answers are made up words that sound similar :)

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1. what happens when excess ammonia is added to (Fe(H2O)3(OH)3)

  • fizzing
  • precipitate dissolves
  • no visible change
  • colour change brown to green
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2. why is a support medium used for heterogenous catalysts

  • the support medium reacts with any impurities to remove them from the system
  • to stop the catalyst getting lost within the products
  • the catalysts are very expensive and the surface area is increased
  • the catalyst needs to react with the support medium before it functions properly

3. what shape is formed when large ligands eg Chloride ions bond to a transition metal ion

  • octohedral
  • trigonal planar
  • tetrahedral
  • square planar

4. what factors influence the colour of complexes

  • number of ligands, size of ligands and temperature
  • coordination number, identity of ligand, identity of transition metal ion
  • identity of transition metal ion, size of ligand, temperature
  • solvent

5. what reagent is (Ag(NH3)2) used in

  • Benedict's solution
  • platin reagent
  • Tollens reagent
  • Fehling's reagent
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