AQA A Level Chemistry

Revision Notes

8.2.9 Reactions of Metal-Aqua Ions

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Reactions of Metal-Aqua Ions

  • In this practical activity, test tube reactions of copper(II), iron(II), iron(III) and aluminium ions with three bases are investigated
  • 10 drops of the metal-aqua ion are added to a clean dry test tube
  • 10 drops of 1.0 mol dm-3 sodium hydroxide solution are added, the test tube shaken and any observations noted
  • A further 10 drops of the base are added so that the base is in excess and any additional observations are recorded
  • The procedure is repeated with 1.0 mol dm-3 ammonia solution and then 1.0 mol dm-3 sodium carbonate solution

The reactions of metal-aqua ions with bases table

Metal aqua ions with bases Table, downloadable AS & A Level Chemistry revision notes
  • It is important to use the correct vocabulary in your observations when referring to solutions and precipitates as well as mentioning further changes on addition of an excess reagent
  • Some changes take place over the course of a few minutes so its best not to dispose of the contents of test tubes right away, but return to them for another look
  • The identities of the precipitates and the equations for the reactions are covered in a previous section on metal-aqua ions

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