Which of the following electrolytes is used in the electrolytic refining of copper ?
Copper sulphate
The correct answer is Option 3 i.e. Copper sulphate.
In the electrolytic refining of copper, copper sulphate (CuSO₄) solution is used as the electrolyte. The process helps purify copper by removing impurities from the anode and depositing pure copper at the cathode.
The basic process involves:
-
Copper anode (impure copper) is used in the electrolyte solution of copper sulphate.
-
An electric current passes through the solution, and copper ions (Cu²⁺) from the anode dissolve into the solution.
-
These copper ions migrate to the cathode (pure copper electrode) where they are reduced and deposited as pure copper.
सही उत्तर विकल्प 3 है अर्थात कॉपर सल्फेट।
कॉपर के इलेक्ट्रोलाइटिक रिफाइनिंग में, कॉपर सल्फेट (CuSO₄) घोल का उपयोग इलेक्ट्रोलाइट के रूप में किया जाता है। यह प्रक्रिया एनोड से अशुद्धियों को हटाकर और कैथोड पर शुद्ध कॉपर जमा करके कॉपर को शुद्ध करने में मदद करती है।
मूल प्रक्रिया में शामिल है:
- कॉपर एनोड (अशुद्ध कॉपर) का उपयोग कॉपर सल्फेट के इलेक्ट्रोलाइट घोल में किया जाता है।
- घोल से एक विद्युत धारा गुजरती है, और एनोड से कॉपर आयन (Cu²⁺) घोल में घुल जाते हैं।
- ये कॉपर आयन कैथोड (शुद्ध कॉपर इलेक्ट्रोड) में चले जाते हैं जहाँ वे कम हो जाते हैं और शुद्ध कॉपर के रूप में जमा हो जाते हैं।
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