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Electrochemistry

Dive into the fascinating world of electrochemistry, exploring redox reactions crucial for battery technology. Learn how oxidation and reduction processes work, with zinc losing electrons to form zinc ions and copper ions gaining electrons to create copper. Understand the structure and function of batteries, including types such as lead, nickel-cadmium, alkaline, and lithium. Discover the significance of salt bridges and porous disks in maintaining charge neutrality. This overview will cover essential concepts found in the "World of Chemistry" by Zumdahl et al.

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Electrochemistry

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  1. Electrochemistry Redox Oxidation / Reduction

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

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

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

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

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

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

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

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

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

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

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

  13. 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

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

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

  16. Electroplating

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

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