Verifikation der Aktivitätsreihe

Prüfung der Metallreaktivität durch Verdrängungsreaktionen

Electrochemistry Beginner (Middle School) 30 Min. ~$12,00

Ziel

Die elektrochemische Aktivitätsreihe überprüfen, indem getestet wird, ob Metalle andere Metalle aus einer Lösung verdrängen können.

Hintergrund

A more reactive (more easily oxidized) metal will displace a less reactive metal from its salt solution. By testing multiple combinations, students can experimentally construct the activity series: Zn > Fe > Cu > Ag.

Sicherheitswarnungen

  • Silver nitrate stains skin permanently
  • Copper sulfate is toxic
  • Wear gloves when handling solutions

Erforderliche PSA

goggles gloves lab_coat

Materialien

  • Zinc strips (3 pieces)
    Small pieces
  • Iron nails (3)
    Clean steel nails
  • Copper strips (3 pieces)
  • Copper(II) sulfate solution (50 mL)
    0.1M
  • Iron(II) sulfate solution (50 mL)
    0.1M
  • Zinc sulfate solution (50 mL)
    0.1M
  • Silver nitrate solution (30 mL)
    0.1M

Ausrüstung

Test tubes and rack Sandpaper Forceps Timer

Durchführung

1

Sand all metal pieces until shiny to remove oxide layers.

3 Min.
2

Place 10 mL of each metal salt solution into labeled test tubes. You need: CuSO₄, FeSO₄, ZnSO₄, and AgNO₃.

3 Min. Wear gloves
3

Test zinc in CuSO₄ solution. Observe for 5 minutes and record changes on the metal and in the solution.

5 Min.
4

Test iron in CuSO₄ solution. Observe and record.

5 Min.
5

Test copper in ZnSO₄ solution. Observe and record (expect no reaction).

5 Min.
6

Test copper in AgNO₃ solution. Observe silver crystals forming on the copper.

5 Min.
7

Compile results into a reactivity table and rank the metals from most to least reactive.

4 Min.

Erwartete Ergebnisse

Zinc displaces copper (blue solution fades, copper deposits on zinc). Iron displaces copper (blue fades slower). Copper does not displace zinc. Copper displaces silver (silver crystals grow). Order: Zn > Fe > Cu > Ag.

Aufräumen

Collect silver waste separately in heavy metal container. Dispose of copper waste properly. Rinse metal pieces and test tubes.

Details

Kategorie
Electrochemistry
Schwierigkeit
Beginner (Middle School)
Dauer
30 Min.
Geschätzte Kosten
$12,00
Schritte
7
Materialien
7

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Frequently Asked Questions

What is the objective of Verifikation der Aktivitätsreihe?
Die elektrochemische Aktivitätsreihe überprüfen, indem getestet wird, ob Metalle andere Metalle aus einer Lösung verdrängen können.
How difficult is Verifikation der Aktivitätsreihe?
This experiment is rated as Beginner (Middle School). It takes approximately 30 minutes to complete.
What safety precautions are needed for Verifikation der Aktivitätsreihe?
Key safety precautions include: Silver nitrate stains skin permanently; Copper sulfate is toxic; Wear gloves when handling solutions.
What materials are needed for Verifikation der Aktivitätsreihe?
The main materials required are: Zinc strips, Iron nails, Copper strips, Copper(II) sulfate solution, Iron(II) sulfate solution.
What results should I expect from Verifikation der Aktivitätsreihe?
Zinc displaces copper (blue solution fades, copper deposits on zinc). Iron displaces copper (blue fades slower). Copper does not displace zinc. Copper displaces silver (silver crystals grow). Order: Zn > Fe > Cu > Ag.