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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



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Topic Content:

  • Oxidizing Agent
  • Reducing Agent
  • Disproportionation Reaction
  • Tests for Oxidizing Agents

Oxidizing Agent:

Oxidizing agents are substances that; 

1. supply oxygen,
2. remove hydrogen,
3. accept electrons,
4. are reduced in a chemical reaction.

Examples of oxidizing agents include electronegative elements like sulphur, oxygen, fluorine, chlorine, etc., concentrated tetraoxosulphate(VI) acid, potassium tetraoxomangnate (VII), potassium heptaoxodichromate(VI) etc.

Reducing Agent:

Reducing agents are substances that;

1. supply hydrogen,
2. remove oxygen,
3. lose electrons,
4. are oxidized in a chemical reaction.

Examples of reducing agents include Hydrogen, Carbon(IV) oxide, active metals generally, Sulphur(IV)oxide, Ammonium hydrosulphide, Potassium Iodide, etc.

Disproportionation Reaction:

A disproportionation reaction is a reaction in which a reactant acts as an oxidizing and a reducing agent.

e.g.

 

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