Chemistry Grade 9

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7.1 OXIDATION AND REDUCTION REACTIONS 7.1.1 Oxidationand Reduction in Terms of Loss or Gain of Electron

7.2 OXIDATION STATE AND RULES FOR ASSIGNING OXIDATION STATE 7.2.1 Rules for Assigning Oxidation Numbers (O.N.)

7.5 ELECTROCHEMICAL CELLS 7.5.1 Concept of Electrolytes 7.5.2 Electrolytic cells 7.5.2.1Construction of an Electrolytic Cell 7.5.2.2Working of an Electrolytic Cell 7.5.2.3 Electrolysis of Water 7.5.3.Galvanic Cell 7.5.3.2 Working of the Cell

7.6 ELECTROCHEMICAL INDUSTRIES 7.6.1 Manufacture of Sodium Metal from Fused NaCl 7.6.1.1Working of Downs Cell 7.6.2 Manufacture of NaOH from Brine

7.7 CORROSION AND ITS PREVENTION 7.7.1 Rusting of Iron 7.7.2 Prevention of Corrosion 7.7.2.1 Removal of stains 7.7.2.2 Paints and greasing 7.7.2.3 Alloying 7 .7.2.4 Metallic coating 7.7.3.1 Zinc coating or Galvanizing 7.7.3.2 Tin Coating 7.7.4.1 Electroplating of Silver 7.7.4.2 Electroplating of Chromium 7.7.4.3 Electroplating of zinc 7.7.4.4 Electroplating of tin 7.7.4.5 Electrolytic refining of copper