Chapter 19.3 : Oxidizing and Reducing Agents

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Chapter 19.3 : Oxidizing and Reducing Agents

  1. 1. Chapter 19.3
  2. 2. 1. Relate chemical activity to oxidizing and reducing strength. 2. Explain the concept of disproportionation.
  3. 3. • A reducing agent is a substance that has the potential to cause another substance to be reduced. • An oxidizing agent is a substance that has the potential to cause another substance to be oxidized.
  4. 4. Iron - oxidized Copper - reduced Iron – reducing agent Copper – oxidizing agent
  5. 5. • Different substances can be compared and rated by their relative potential as reducing and oxidizing agents. • The negative ion of a strong oxidizing agent is a weak reducing agent. • The positive ion of a strong reducing agent is a weak oxidizing agent.
  6. 6. • A process in which a substance acts as both an oxidizing agent and a reducing agent is called disproportionation. • A substance that undergoes disproportionation is both self-oxidizing and self-reducing.  example: Hydrogen peroxide is both oxidized and reduced -1 -1 0 2 2 2 22H O 2H O O 

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