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Electrochemistry

Electrochemistry. Redox Oxidation / Reduction. Potato Clock. My name is Leo. Grr-rrrr…. Leo Ger. “Lose electron  oxidation” Zn  2e - + Zn 2+ “Gain electron  reduction” 2e - + Cu 2+  Cu. Rules for assigning oxidation states. Redox Reaction.

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Electrochemistry

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  1. Electrochemistry Redox Oxidation / Reduction

  2. Potato Clock

  3. My name is Leo. Grr-rrrr… Leo Ger “Lose electron  oxidation” Zn  2e-+ Zn2+ “Gain electron  reduction” 2e- + Cu2+  Cu

  4. Rules for assigning oxidation states

  5. Redox Reaction Zumdahl, Zumdahl, DeCoste, World of Chemistry2002, page 591

  6. Electron Flow Zumdahl, Zumdahl, DeCoste, World of Chemistry2002, page 592

  7. Ion flow keeps the charge neutral Zumdahl, Zumdahl, DeCoste, World of Chemistry2002, page 592

  8. The salt bridge contains a strong electrolyte Zumdahl, Zumdahl, DeCoste, World of Chemistry2002, page 592

  9. The porous disk allows ion flow Zumdahl, Zumdahl, DeCoste, World of Chemistry2002, page 592

  10. Schematic of a Battery Zumdahl, Zumdahl, DeCoste, World of Chemistry2002, page 593

  11. Simple Battery Kelter, Carr, Scott, Chemistry A Wolrd of Choices 1999, page 487

  12. Redox of a Battery Kelter, Carr, Scott, Chemistry A Wolrd of Choices 1999, page 487

  13. Standard Electrode Potentials

  14. Types of Batteries • Lead • Ni-cad • Alkaline • Rechargeable • Mercury • Lithium

  15. One Cell of a Lead Battery Zumdahl, Zumdahl, DeCoste, World of Chemistry2002, page 595

  16. The First Battery Alessandro Volta (1745 – 1827) Generate electricity by putting a layer of cardboard soaked in brine between discs of copper and zinc – a voltaic cell. When he made a ‘pile’ of these cells, he increased the amount of electricity generated. This was the first battery – a collection of cells. Zinc disc Copper disc Newmark, CHEMISTRY, 1993, page 46

  17. A Mercury Battery Zumdahl, Zumdahl, DeCoste, World of Chemistry2002, page 596

  18. A Common Dry Cell Battery Zumdahl, Zumdahl, DeCoste, World of Chemistry2002, page 596

  19. Electroplating

  20. Cathodic Protection of an Underground Pipe Zumdahl, Zumdahl, DeCoste, World of Chemistry2002, page 598

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