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Redox - Coggle Diagram

- - - - Assign oxidation states for each atom in the reactant and product species
      - Deduce which species is oxidized and which species is reduced
      - State the half-equation for the oxidation process and the corresponding half-equation for the reduction process
      - Balance these half-equations so that the number of electrons lost equals the number of electrons gained
      - Add the two half equations together to write the overall redox reaction
      - Check the total charge on the reactant and product sides
      - Balance charges by adding H+ and H2O to the appropriate sides
- - - - BOD is defined as the amount of oxygen required to oxidize organic matter in a sample of water at a definite temperature over a period of 5 days. BOD is measured in units of ppm.
      - Pure water generally has BOD less than 1 ppm
      - ppm = mass of component in solution/total mass of solution * 10^6