डेनियल सेल निर्माण

क्लासिक जस्ता-तांबा गैल्वेनिक सेल बनाना

Electrochemistry Intermediate (High School) 45 मिनट ~$20.00

उद्देश्य

मानक सेल विभव मापने और प्रत्येक इलेक्ट्रोड पर विद्युत रासायनिक अभिक्रियाओं का अवलोकन करने के लिए डेनियल सेल बनाएं।

पृष्ठभूमि

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.

सुरक्षा चेतावनियाँ

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

आवश्यक PPE

goggles gloves lab_coat

सामग्री

  • 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)

उपकरण

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

प्रक्रिया

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 मिनट Handle hot liquids carefully
2

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

3 मिनट
3

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

2 मिनट Wear gloves for CuSO₄
4

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

2 मिनट
5

Connect the two beakers with the salt bridge.

2 मिनट
6

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

3 मिनट
7

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

15 मिनट
8

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

5 मिनट

अपेक्षित परिणाम

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).

सफाई

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

विवरण

श्रेणी
Electrochemistry
कठिनाई
Intermediate (High School)
अवधि
45 मिनट
अनुमानित लागत
$20.00
चरण
8
सामग्री
7

अधिक प्रयोग

कॉपर सल्फेट का विद्युत अपघटन 50 min क्रियाशीलता श्रृंखला सत्यापन 30 min जंग रोकथाम विधियां 30 min जल का विद्युत अपघटन 40 min तांबे के साथ विद्युत लेपन 60 min नींबू बैटरी 20 min वोल्टेइक सेल विभव मापन 60 min सांद्रता सेल 45 min

Frequently Asked Questions

What is the objective of डेनियल सेल निर्माण?
मानक सेल विभव मापने और प्रत्येक इलेक्ट्रोड पर विद्युत रासायनिक अभिक्रियाओं का अवलोकन करने के लिए डेनियल सेल बनाएं।
How difficult is डेनियल सेल निर्माण?
This experiment is rated as Intermediate (High School). It takes approximately 45 minutes to complete.
What safety precautions are needed for डेनियल सेल निर्माण?
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 डेनियल सेल निर्माण?
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 डेनियल सेल निर्माण?
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).