9

Redox Reactions and Electrochemistry

Chapter Highlights

Oxidation, Reduction, Redox reactions, Oxidation number, Balancing of oxidation reduction equations, Electrolysis, Faraday’s law, Electrical conductance, Conductivities, Kohlraush law, Voltaic cell, Electrode potential, emf, Nernst equation, Some commercial cells, Corrosion and various levels of multiple-choice questions.

REDOX REACTIONS
BASIC CONCEPTS

Oxidation

Oxidation involves any one of the following processes.

  • Combination of oxygen

    2Mg + O2 images 2MgO

  • Removal of hydrogen

    4HCl + MnO2 MnCl2 + Cl2 + 2H2O

  • Addition of electronegative element or increase in its ratio

    2SnCl2 + Cl2 2SnCl ...

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