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SS2: CHEMISTRY - 1ST TERM

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  1. Periodicity and Periodic Table I | Week 1
    5 Topics
    |
    1 Quiz
  2. Quantum Numbers Orbitals & Electrical Structure | Week 2
    6 Topics
    |
    1 Quiz
  3. Periodicity and Periodic Table II | Week 3
    12 Topics
    |
    1 Quiz
  4. Periodicity and Periodic Properties III | Week 4
    11 Topics
    |
    1 Quiz
  5. Periodicity and Periodic Properties IV | Week 5
    5 Topics
    |
    1 Quiz
  6. Mass-Volume Relationship in Reaction | Week 6
    8 Topics
    |
    1 Quiz
  7. Types of Reactions: Oxidation and Reduction | Week 7 & 8
    7 Topics
    |
    1 Quiz
  8. Oxidation – Reduction Reaction II | Week 9
    3 Topics
    |
    1 Quiz
  9. Electrode Potential and Electrochemical Cells I | Week 10
    6 Topics
    |
    1 Quiz
  10. Electrode Potential and Electrochemical Cells II | Week 11
    5 Topics
    |
    1 Quiz
  11. Electrolysis I | Week 12
    8 Topics
    |
    1 Quiz
  12. Electrolysis II | Week 13
    8 Topics
    |
    1 Quiz



Lesson 12, Topic 5
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Extraction and Purification of Metals

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Topic Content:

  • Extraction and Purification of Metals

Metals such as silver and copper, are refined or purified by electrolysis. The impure metals are made the anode, while the pure metals are made the cathode, the electrolyte is an aqueous solution of the salt of the metals.

Purification of Impure Copper by Electrolysis:

copper - electrolytic cell

An electrolytic cell in which the impure copper serves as the anode and pure copper plate serves as the cathode is used and the electrolyte is copper(II) tetraoxosulphate (VI) solution (CuSO4).

 

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