कॉपर सल्फेट का विद्युत अपघटन

तांबे के इलेक्ट्रोड के साथ मात्रात्मक विद्युत अपघटन

Electrochemistry Intermediate (High School) 50 मिनट ~$12.00

उद्देश्य

तांबे के इलेक्ट्रोड का उपयोग करके कॉपर सल्फेट विलयन का मात्रात्मक विद्युत अपघटन करें और फैराडे का विद्युत अपघटन का पहला नियम सत्यापित करें।

पृष्ठभूमि

When copper sulfate solution is electrolyzed with copper electrodes, copper is deposited at the cathode and dissolved from the anode. By measuring mass changes and current, Faraday's law can be verified: the mass of substance deposited is proportional to the charge passed.

सुरक्षा चेतावनियाँ

  • Copper sulfate is toxic if ingested
  • Wear gloves when handling solutions
  • Handle electrical connections with dry hands

आवश्यक PPE

goggles gloves lab_coat

सामग्री

  • Copper(II) sulfate (CuSO₄) (200 mL)
    1M solution
  • Copper strips (2) (2 pieces)
    Similar size, sanded clean

उपकरण

DC power supply (1-5V) Ammeter Beaker (400 mL) Wires Analytical balance Timer Sandpaper

प्रक्रिया

1

Sand both copper strips until shiny. Wash with distilled water and dry. Weigh each strip accurately on the analytical balance.

5 मिनट
2

Pour 200 mL of 1M CuSO₄ into the beaker.

2 मिनट Wear gloves
3

Connect the circuit: power supply → ammeter → anode (Cu strip) → solution → cathode (Cu strip) → power supply.

5 मिनट
4

Set the power supply to give a steady current of about 0.5 A. Record the exact current.

2 मिनट
5

Run the electrolysis for exactly 20 minutes, monitoring the current.

20 मिनट
6

Turn off the power supply. Carefully remove both electrodes, rinse with distilled water, dry, and reweigh.

5 मिनट
7

Calculate the charge passed (Q = I x t). Calculate theoretical mass deposited using Faraday's law: m = (M x Q) / (n x F). Compare with actual mass change.

8 मिनट

अपेक्षित परिणाम

The cathode should gain mass and the anode should lose approximately the same mass. At 0.5 A for 20 min: Q = 600 C, theoretical mass = (63.55 x 600) / (2 x 96485) = 0.197 g. Measured value should be within 10%.

सफाई

Dispose of copper sulfate solution in heavy metal waste. Rinse and store copper strips. Clean the beaker and equipment.

विवरण

श्रेणी
Electrochemistry
कठिनाई
Intermediate (High School)
अवधि
50 मिनट
अनुमानित लागत
$12.00
चरण
7
सामग्री
2

अधिक प्रयोग

क्रियाशीलता श्रृंखला सत्यापन 30 min जंग रोकथाम विधियां 30 min जल का विद्युत अपघटन 40 min डेनियल सेल निर्माण 45 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 कॉपर सल्फेट का विद्युत अपघटन?
तांबे के इलेक्ट्रोड का उपयोग करके कॉपर सल्फेट विलयन का मात्रात्मक विद्युत अपघटन करें और फैराडे का विद्युत अपघटन का पहला नियम सत्यापित करें।
How difficult is कॉपर सल्फेट का विद्युत अपघटन?
This experiment is rated as Intermediate (High School). It takes approximately 50 minutes to complete.
What safety precautions are needed for कॉपर सल्फेट का विद्युत अपघटन?
Key safety precautions include: Copper sulfate is toxic if ingested; Wear gloves when handling solutions; Handle electrical connections with dry hands.
What materials are needed for कॉपर सल्फेट का विद्युत अपघटन?
The main materials required are: Copper(II) sulfate (CuSO₄), Copper strips (2).
What results should I expect from कॉपर सल्फेट का विद्युत अपघटन?
The cathode should gain mass and the anode should lose approximately the same mass. At 0.5 A for 20 min: Q = 600 C, theoretical mass = (63.55 x 600) / (2 x 96485) = 0.197 g. Measured value should be within 10%.