Redox Reactions and Ionic Equations

• What is a redox reaction?

  A reaction involving oxidation and reduction
• What happens during oxidation in a redox reaction?

  Loss of electrons from a substance
• What occurs during reduction in a redox reaction?

  Gain of electrons by a substance
• What does the oxidation of iron (Fe) produce?

  Fe²+
• What does the reduction of copper ions (Cu²+) produce?

  Copper (Cu)
• What do ionic equations show?

  Only the reacting particles and products
• What are spectator ions in ionic equations?

  Ions that do not participate in the reaction
• In the reaction of magnesium with zinc chloride, what is oxidized?

  Magnesium (Mg)
• In the reaction of zinc ions (Zn²+) gaining electrons, what is the reduction equation?

  Zn²+ + 2e⁻ → Zn
• How does the displacement reaction occur in metal-acid reactions?

  A more reactive metal displaces a less reactive metal
• What are the key components of redox reactions?

  • Oxidation: loss of electrons
  • Reduction: gain of electrons
  • Involves two substances
• What is the process of a metal-acid reaction?

  1. Metal reacts with acid
  2. Oxidation occurs
  3. Hydrogen ions are reduced
  4. Salt and hydrogen gas are produced
• What is the significance of spectator ions in ionic equations?

  • They do not affect the reaction
  • They are present in the solution
  • They are omitted from the ionic equation