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SS1: CHEMISTRY - 2ND TERM

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  1. Kinetic Theory of Matter | Week 1
    3 Topics
    |
    1 Quiz
  2. Kinetic Theory of Matter & Gas Laws I | Week 2
    3 Topics
    |
    1 Quiz
  3. Gas Laws II | Week 3
    3 Topics
    |
    1 Quiz
  4. Gas Laws III | Week 4
    3 Topics
    |
    1 Quiz
  5. Gas Laws IV | Week 5
    3 Topics
    |
    1 Quiz
  6. Mole Concept | Week 6
    5 Topics
    |
    1 Quiz
  7. Acid, Bases and Salts I | Week 7
    7 Topics
    |
    1 Quiz
  8. Acid, Bases and Salts II | Week 8
    6 Topics
    |
    2 Quizzes
  9. Acid, Bases and Salts III | Week 9
    3 Topics
    |
    2 Quizzes
  10. Acid, Bases and Salts IV | Week 10
    4 Topics
    |
    1 Quiz
  11. Acid, Bases and Salts V | Week 11
    5 Topics
    |
    1 Quiz



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Topic Content:

  • Definition of Hydrolysis
  • Classes of Normal Salts
    • Salts formed from Weak Acids and Strong Bases
    • Salts formed from Strong Acids and Weak Bases
    • Salts formed from Weak Bases and Weak Acids
    • Salts formed from Strong Acids and Strong Bases

Some normal salts dissolve in water while others do not except in warm or hot water. Among the soluble salts, we have those which when dissolved, hydrolyze, i.e. split in water, and the resultant solution behaves like either an acidic or basic solution

What is Hydrolysis?

Hydrolysis is the reaction between salt and water to form a solution which is either acidic or basic.

Salts that undergo hydrolysis are salts derived from weak acids, weak bases or both.

Classes of Normal Salts:

On the basis of hydrolysis, there are four classes of normal salts.

1. Salts formed from Weak Acids and Strong Bases:

The above salts hydrolyse in water to form alkaline solution. Their solution turns red litmus paper blue. Examples are: Na2CO3, K2CO3, Na2SO3, K2S, etc.

Example:

 

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