Electrochemistry Fundamentals and Applications

Revision sheet excerpt

📋 Course Outline

  1. Oxidation and Reduction
  2. Electrochemical Cells
  3. Galvanic Cells
  4. Electrolytic Cells
  5. Standard Electrode Potentials
  6. Nernst Equation
  7. Battery Technologies
  8. Fuel Cells
  9. Electrolysis Processes
  10. Corrosion and Prevention

📖 1. Oxidation and Reduction

🔑 Key Concepts & Definitions

  • Oxidation: The loss of electrons by a substance during a chemical reaction. It increases the oxidation state of an element.
  • Reduction: The gain of electrons by a substance during a chemical reaction. It decreases the oxidation state of an element.
  • Oxidizing Agent: A substance that accepts electrons and causes another substance to be oxidized.
  • Reducing Agent: A substance that donates electrons and causes another substance to be reduced.
  • Redox Reaction: A chemical process involving simultaneous oxidation and reduction, where electrons are transferred from one species to another.
  • Oxidation State: A number assigned to an element in a compound representing the number of electrons lost or gained relative to its elemental form.

📝 Essential Points

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Quiz preview

1. What do oxidation and reduction specifically refer to in a chemical reaction?

2. What is the primary function of a salt bridge in an electrochemical cell?

3. What is the numerical constant used in the simplified form of the Nernst equation at 25°C to relate cell potential to reaction quotient?

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Flashcards preview

Oxidation — definition?

Loss of electrons during a chemical reaction.

Oxidation — definition?

Loss of electrons during a chemical reaction.

Electrochemical cell — role?

Converts chemical energy to electrical energy or vice versa.

Reduction — definition?

Gain of electrons during a chemical reaction.

Galvanic vs electrolytic — difference?

Galvanic is spontaneous; electrolytic is non-spontaneous.

Oxidizing agent — role?

Accepts electrons, causes oxidation of others.

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