Properties and reactions of Group 7 elements and compounds (inorganic)

This video covers the following points: a recall the characteristic physical properties of the elements limited to the appearance of solutions of the elements in water and hydrocarbon solvents b describe and carry out the following chemical reactions of halogens: i oxidation reactions with metal and non-metallic elements and ions such as iron II and iron III ions in solution ii disproportionation reactions with cold and hot alkali, eg hot potassium hydroxide with iodine to produce potassium iodate V c carry out an iodine/thiosulfate titration, including calculation of the results and evaluation of the procedures involved, eg determination of the purity of potassium iodate V by liberation of iodine and titration with standard sodium thiosulfate solution d describe and carry out the following reactions: i potassium halides with concentrated sulfuric acid, halogens and silver nitrate solution ii silver halides with sunlight and their solubilities in aqueous ammonia solution iii hydrogen halides with ammonia and with water to produce acids e make predictions about fluorine and astatine and their compounds based on the trends in the physical and chemical properties of halogens.