CHEMISTRY 102 ELECTROCHEMISTRY OUTLINE

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CHEMISTRY 102 ELECTROCHEMISTRYOUTLINE
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I. OXIDATION (REVIEW)

• A. Lose electrons "OXIDATION" (LEO) - Low
  Electronegativity
• B. Oxidation Numbers
• ( charge "0" for elements)
• C. Solid Metals (IA, IIA, Transitions)
• D. SOP - Standard Oxidation Potential
• E. "0" - Hydrogen Reference Electrode

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II. REDUCTION (REVIEW)

• A. Gain electrons "REDUCTION" (GER) High
  Electronegativity
• B. Oxidation Numbers
• (- charge "0" for elements)
• C. Metal Cations (Usually Transitions)
  Non-Metal Elements(Halogens)
• D. SRP - Standard Reduction Potential
• E. "0" - Hydrogen Reference Electrode

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III. CELLS (VOLTAIC)

• A. Oxidized Species - Anode(attracts anions)
  ANOX "-" electrode
• B. Reduced Species Cathode
• (attracts cations) REDCAT "" electrode
• C. Salt Bridge (electrolyte) - provides flow of
  anions
• D. Circuit - electron flow (spontaneous) delta G
  "-"
• E. Half-Reactions (must have both, cannot have
  one without the other)
• F. NET REACTION (no electrons)
• Review Redox Reactions

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IV. BATTERIES

• A. Dry Cell non-rechargeable
• B. Alkaline non-rechargeable
• C. Mercury non-rechargeable
• D. Lead Storage rechargeable
• E. Ni-Cd rechargeable
• F. Li-H (lithium hydride) rechargeable
• G. Fuel cell hydrogen oxygen yields water
  (non-polluting)

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V. ELECTROLYTIC CELLS

• A. NaCl
• 1. Molten Know Products
• 2. Aqueous Know Products
• B. Electroplating
• 1. Protection
• 2. Jewelry

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VI. CORROSION

• A. Iron "RUST" requires H2O, O2 and is enhanced
  by salt and low temperatures
• B. Other Metals
• 1. Copper Green
• 2. Silver Black
• 3. Zinc White
• C. Protection
• 1. Paint
• 2. Plate with different metal
• 3. Cathodic Protection Sacrificial Anode