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SS2: CHEMISTRY - 2ND TERM

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  1. Water & Solution I | Week 1
    10 Topics
    |
    1 Quiz
  2. Water, Solution and Solubility | Week 2 & 3
    9 Topics
    |
    1 Quiz
  3. Air | Week 4
    4 Topics
    |
    1 Quiz
  4. Pollution | Week 5
    6 Topics
    |
    1 Quiz
  5. Rate of Chemical Reaction | Week 6 & 7
    6 Topics
    |
    1 Quiz
  6. Energy and Energy Effect I | Week 8 & 9
    7 Topics
    |
    1 Quiz
  7. Energy and Energy Effect II | Week 10 & 11
    6 Topics
    |
    1 Quiz
  8. Chemical Equilibrium | Week 12
    8 Topics
    |
    1 Quiz

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Topic Content:

  • Examples of Questions on Solubility Curve

Example 2.7.1:

1. The solubility values of potassium trioxochlorate(V) at different temperatures are given thus

Temperature010203040506070
Solubility (mol/dm3)5.35.906.57.007.58.008.59.00

Plot the solubility curve for KClO3 from the result above. From your graph answer the question below

(i) What is the solubility of KClO3 at 25°C?

(ii) At what temperature will 1000 cm3 of water dissolve 7.3 moles of KClO3 to form a saturated solution?

(iii) What will be the mass of KClO3that crystallizes out of the solution when a saturated solution made in 1000 g of water is cooled from 62°C to 15°C

Solution

solubility

(i) 6.73 mol/dm3

 

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