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SS2: CHEMISTRY - 3RD TERM

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  1. Hydrogen and its Compounds | Week 1
    7 Topics
    |
    1 Quiz
  2. Oxygen and its Compounds | Week 2
    7 Topics
    |
    1 Quiz
  3. Halogens, Chlorine and its Compounds | Week 3
    7 Topics
    |
    1 Quiz
  4. Hydrogen Chloride and Hydrochloric Acid | Week 4
    5 Topics
    |
    1 Quiz
  5. Nitrogen and Its Compounds | Week 5
    9 Topics
    |
    1 Quiz
  6. Ammonia | Week 6
    9 Topics
    |
    1 Quiz
  7. Sulphur and its Compounds | Week 7
    13 Topics
    |
    1 Quiz
  8. Hydrocarbons | Week 8
    12 Topics
    |
    1 Quiz
  9. Alkanols | Week 9
    4 Topics
    |
    1 Quiz



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Topic Content:

  • Methane (CH4)
  • Laboratory Preparation of Methane
  • General Methods of Preparation of Alkanes
  • Industrial Preparation of Methane
  • Physical Properties of Methane
  • Chemical Properties of Methane
  • Uses of Methane
  • Test for Alkanes

Alkane forms a homologous series of saturated hydrocarbons. They have the general molecular formula of CnH2n+2 (where n = 1, 2, 3…). All the carbon atoms in alkanes are tetrahedrally bonded. The carbon atoms are sp3 hybridized. They are chemically more stable compared to alkenes and alkynes.

Methane (CH4):

Screenshot 2022 06 23 at 08.54.48

Hybridization = sp3       

Bond angle = 109.5°

Laboratory Preparation of Methane:

LABORATORY PREPARATION OF METHANE
Laboratory Preparation of Methane

Methane gas is prepared in the laboratory by heating sodium ethanoate (sodium acetate) with soda-lime as shown in the diagram for the laboratory set-up above.

 

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