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For more information, please see full course syllabus of Chemistry
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Lecture Comments (1)

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Post by Maimouna Louche on July 31, 2012

I love batteries. Thanks for the lesson!

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Practical Batteries, Electrolysis

  • Primary batteries: dry cell; alkaline battery; fuel cell

  • Secondary batteries: lead-acid, Nicad; lithium ion

  • Electrolysis: breaking down compounds by electric current

  • Examples of electrolysis: Na and Cl2 from fused NaCl; NaOH and Cl2 from salt solution; copper refining; metal plating

  • Faraday = 96,500 coulombs = 96,500 As

  • Do examples of quantitative use of Faraday’s Laws e.g. Al production

  • Corrosion of iron is an electrolytic process: needs both H2O and O2

  • Can protect iron by coatings and sacrificial Zn electrodes

Practical Batteries, Electrolysis

Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.

  • Intro 0:00
  • Primary Batteries 0:54
    • Leclanche Dry Cell
    • Alkaline Cell
  • Fuel Cell 6:53
    • Overall Reaction
  • Secondary Batteries 13:47
    • Car Battery
  • Electrolysis 18:41
    • Aluminum Plant
    • Chromium Plating
  • Sodium Chloride 24:08
    • Example: Metallic Na
    • Example: Bleach
  • Faraday's Laws 32:22
    • Example: Aluminum Electrolysis
  • Corrosion of Iron 41:24
    • Example: Iron Galvanic Cell
  • Protection of Iron Against Corrosion 46:55
    • Coating of Tin Cans
  • Additional Example 1