Inorganic Chemistry

Inorganic Chemistry

Periodicity
1. Classification
2. Physical properties of Period 3 elements
  1. The trends in atomic radius, first ionisation energy and melting point of the elements Na–Ar
  2. The reasons for these trends in terms of the structure of and bonding in the elements.
Group 2, the alkaline earth metals
1. The trends in atomic radius, first ionisation energy and melting point of the elements Mg–Ba
2. The reactions of the elements Mg–Ba with water.
3. The use of magnesium in the extraction of titanium from TiCl4
4. The relative solubilities of the hydroxides of the elements Mg–Ba in water.
5. The use of Mg(OH)2 in medicine and of Ca(OH)2 in agriculture.
6. Mg(OH)2 is sparingly soluble.
7. The use of CaO or CaCO3 to remove SO2 from flue gases
8. The relative solubilities of the sulfates of the elements Mg–Ba in water.
9. BaSO4 is insoluble.
10. The use of acidified BaCl2 solution to test for sulfate ions.
11. The use of BaSO4 in medicine.
Group 7, the halogens
1. Trends in properties
  1. The trends in electronegativity and boiling point of the halogens.
  2. The trend in oxidising ability of the halogens down the group, including displacement reactions of halide ions in aqueous solution.
  3. The trend in reducing ability of the halide ions, including the reactions of solid sodium halides with concentrated sulfuric acid.
  4. The use of acidified silver nitrate solution to identify and distinguish between halide ions.
  5. The trend in solubility of the silver halides in ammonia.
2. Uses of chlorine and chlorate(I)
  1. The reaction of chlorine with water to form chloride ions and chlorate(I) ions.
  2. The reaction of chlorine with water to form chloride ions and oxygen.
  3. The use of chlorine in water treatment.
    1. Benefits and disadvantages
  4. The reaction of chlorine with cold, dilute, aqueous NaOH and uses of the solution formed.

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