Chemistry 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 Electrolytes7.5.2 Electrolytic cells7.5.2.1Construction of an Electrolytic Cell7.5.2.2Working of an Electrolytic Cell7.5.2.3 Electrolysis of Water7.5.3.Galvanic Cell7.5.3.2 Working of the Cell

7.6 ELECTROCHEMICAL INDUSTRIES 7.6.1 Manufacture of Sodium Metal from Fused NaCl 7.6.1.1Working of Downs Cell7.6.2 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 Galvanizing7.7.3.2 Tin Coating7.7.4.1 Electroplating of Silver7.7.4.2 Electroplating of Chromium7.7.4.3 Electroplating of zinc7.7.4.4 Electroplating of tin7.7.4.5 Electrolytic refining of copper