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IDENTIFICATION OF IONS

IDENTIFICATION OF IONS. PREPARED BY: ERDEM ULUÇINAR. When we have an ion which we don’t know we can use some methods to identfy it. In this slide show, I will talk about: Testing for Halide Ions Testing for Sulphate Ions Testing for Metal Ions. 1. Testing for halide ions. Apparatus:

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IDENTIFICATION OF IONS

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  1. IDENTIFICATION OF IONS PREPARED BY: ERDEM ULUÇINAR

  2. When we have an ion which we don’t know we can use some methods to identfy it. In this slide show, I will talk about: • Testing for Halide Ions • Testing for Sulphate Ions • Testing for Metal Ions

  3. 1. Testing for halide ions • Apparatus: • Nitric acid(to make the environment acidic for silver nitrate. • Silver Nitrate(Reagent for halide ions)

  4. Method • Take a small amount of solutions. • Add dilute nitric acid to all of them in same amounts • Environment is ready. Add silver nitrate.

  5. Possible Results

  6. Observation White Cream No pre. Colourless Colourless Yellow Cl Br Cl or Br

  7. 2. TESTING FOR SULPHATE IONS • Apparatus: • Hydrochloric acid(to make the environment acidic) • Barium Nitrate Solution(Reagent of Sulphate Ions)

  8. Method • Take a small amount of the solutions • Add dilute hydrochloric acid in equal sizes • Add barium nitrate

  9. Possible Results

  10. Observation Colourless Colourless white Colourless Yellow Colourless NOSO4 SO4 NOSO4

  11. 3. TESTING FOR METAL IONS • Apparatus: • Sodium hydroxide(reagent of metal ions)

  12. Method • Take a small amount of solutions • Add a few drops of sodium hydroxide

  13. Possible Results

  14. After having the possible results, add OH one more time. • There are possible results for it again.

  15. Possible Results

  16. Observation • After adding the first hydroxide: Green Fe(II) Pale Blue Cu(II) Red Brown Fe(III) White White White

  17. After Adding Second Hydroxide To 3 White Precipitate White precipitate Ca Colourless dissolve Al or Zn

  18. THANK YOU

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