Oxidation and Reduction in Biotechnology through Erasmus+ Sustainability
Explore the concept of oxidation and reduction in biotechnology with the help of Erasmus+ Sustainability, discussing electron donation, electron acceptance, oxidation numbers, and calculation examples. Learn how these processes work together for sustainable biotechnological applications.
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Presentation Transcript
Erasmus+ Sustainability by Biotechnology Oxidation and Reduction Ren e Ristl Evelin Szabados
Definition Oxidation: electron donation Reduction: electron acceptance Example: Oxidation: 2 O2- O2 + 4 e- Reduction: Fe3+ + e- Fe2+ Both, oxidation and reduction have to occur together!
Oxidation numbers Often there aren t real molecular charges e.g. glucose or water Atoms possess an oxidation state, described by oxidation numbers H2, O2 are neutral oxidation number 0 In water (H2O), the H has got the oxidation number +1, the O: -2 In organic compounds, the oxidation number of C has to be calculated
Calculation: Oxidation number of C E.g. glucose: + 1 -2 + 1 +1 2 = -1 C is neutral it needs +1 to equalise
Examples +1 0 Oxidation: 2 H2 4 H+ + 4 e- Together: 2 H2+ O2 2 H2O -2 0 Reduction: O2 + 4 e- 2 O2- +3 +1 Oxidation: + 2 e- R R
