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AP Chemistry Unit 4.2 Net-Ionic Equations

Net-Ionic Equations

  • A representation of a chemical reaction→ must be balanced!
    • On AP exam, if coefficients are given can assume that the equation is balanced
  • Balanced Formula/molecular equation: show all species participating in reaction
    • These equations indicate that mass is conserved
    • Ex:
  • Complete ionic equation: strong electrolytes (aq) are ions
    • Remember:
      1. All ionic compounds (salts) and strong acids/bases are strong electrolytes
      2. Solubility rules and if product forms as a solid or not
    • Ex:
    • Keep liquids (H2O (l)), solids, and gases together
  • Net ionic equation: Spectator ions are not included
    • Used to represent only the substance undergoing a chemical change
  • Spectator ions: ions that do not participate directly in the reaction; are on both sides
    • Ions that participate react to form a solid
  • A dissolution equation will show show a solid substance forming aqueous ions
    • Ex:
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