Question
Download Solution PDFDuring electrolytic refining of zinc, it-
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFKey Points
- During electrolytic refining of zinc, zinc gets deposited on the cathode.
- In the electrolytic refining process, impure zinc acts as the anode and a pure zinc strip acts as the cathode.
- The electrolyte used is usually a solution of zinc sulfate (ZnSO4) and sulfuric acid (H2SO4).
- When an electric current is passed through the solution, zinc ions from the anode dissolve into the solution and get deposited on the cathode as pure zinc.
- Impurities from the anode either remain in the solution or fall to the bottom of the electrolytic cell as anode mud.
Additional Information
- Electrolytic refining is a process used to purify metals by means of electrolysis.
- It is commonly used for refining metals like copper, zinc, and aluminum.
- In this process, the impure metal is made the anode and a pure metal sheet is made the cathode.
- The electrolyte is a solution that contains the metal ions to be refined.
- When electric current is passed, the metal ions migrate from the anode to the cathode, leaving impurities behind.
- This process ensures that the metal obtained is of high purity and free from contaminants.
Last updated on Jun 7, 2025
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