Daniell Hücresi Yapımı

Klasik çinko-bakır galvanik hücre oluşturma

Electrochemistry Intermediate (High School) 45 dak ~$20,00

Hedef

Standart hücre potansiyelini ölçmek ve her elektrotta gerçekleşen elektrokimyasal tepkimeleri gözlemlemek için bir Daniell hücresi kurmak.

Arka Plan

The Daniell cell is a classic electrochemical cell that uses zinc and copper half-cells connected by a salt bridge. Zinc is oxidized at the anode while copper ions are reduced at the cathode. The theoretical cell potential is 1.10 V under standard conditions.

Güvenlik Uyarıları

  • Copper sulfate is toxic if ingested
  • Wear gloves when handling copper sulfate solution
  • Handle hot agar solution with care

Gerekli KKD

goggles gloves lab_coat

Malzemeler

  • Zinc sulfate (ZnSO₄) (100 mL)
    1M solution
  • Copper(II) sulfate (CuSO₄) (100 mL)
    1M solution
  • Zinc strip (1 piece)
    Sanded clean
  • Copper strip (1 piece)
    Sanded clean
  • Potassium nitrate (KNO₃) (10 g)
    For salt bridge
  • Agar powder (2 g)
    For salt bridge
  • Insulated wire with clips (50 cm)

Ekipman

Two 250 mL beakers U-tube or cotton wick Multimeter Sandpaper Hot plate

Prosedür

1

Prepare the salt bridge: dissolve 5 g KNO₃ and 2 g agar in 30 mL hot water. Pour into a U-tube and allow to set.

10 dak Handle hot liquids carefully
2

Sand the zinc and copper strips until shiny to ensure good contact.

3 dak
3

Pour 100 mL of 1M ZnSO₄ into one beaker and 100 mL of 1M CuSO₄ into the other.

2 dak Wear gloves for CuSO₄
4

Place the zinc strip in the ZnSO₄ solution and the copper strip in the CuSO₄ solution.

2 dak
5

Connect the two beakers with the salt bridge.

2 dak
6

Connect the multimeter between the zinc (negative) and copper (positive) terminals. Measure the cell voltage.

3 dak
7

Observe both electrodes over 15 minutes. Note any color changes in the solutions and deposits on the electrodes.

15 dak
8

Record the voltage and observations. Compare the measured EMF with the theoretical value of 1.10 V.

5 dak

Beklenen Sonuçlar

The cell should produce approximately 1.0-1.1 V. The zinc strip will slowly dissolve (oxidation), the blue CuSO₄ solution will become lighter, and copper metal will deposit on the copper strip (reduction).

Temizlik

Dispose of copper sulfate solution in heavy metal waste. Rinse and dry the metal strips for reuse. Clean the salt bridge.

Ayrıntılar

Kategori
Electrochemistry
Zorluk
Intermediate (High School)
Süre
45 dak
Tahmini Maliyet
$20,00
Adımlar
8
Malzemeler
7

Daha Fazla Deney

Aktivite Serisi Doğrulaması 30 min Bakırla Galvanik Kaplama 60 min Bakır Sülfat Elektrolizi 50 min Galvanik Hücre Potansiyeli Ölçümü 60 min Konsantrasyon Hücresi 45 min Limon Pili 20 min Pas Önleme Yöntemleri 30 min Suyun Elektrolizi 40 min

Frequently Asked Questions

What is the objective of Daniell Hücresi Yapımı?
Standart hücre potansiyelini ölçmek ve her elektrotta gerçekleşen elektrokimyasal tepkimeleri gözlemlemek için bir Daniell hücresi kurmak.
How difficult is Daniell Hücresi Yapımı?
This experiment is rated as Intermediate (High School). It takes approximately 45 minutes to complete.
What safety precautions are needed for Daniell Hücresi Yapımı?
Key safety precautions include: Copper sulfate is toxic if ingested; Wear gloves when handling copper sulfate solution; Handle hot agar solution with care.
What materials are needed for Daniell Hücresi Yapımı?
The main materials required are: Zinc sulfate (ZnSO₄), Copper(II) sulfate (CuSO₄), Zinc strip, Copper strip, Potassium nitrate (KNO₃).
What results should I expect from Daniell Hücresi Yapımı?
The cell should produce approximately 1.0-1.1 V. The zinc strip will slowly dissolve (oxidation), the blue CuSO₄ solution will become lighter, and copper metal will deposit on the copper strip (reduction).