Lesson Plan: Acid Dissociation Constants Chemistry

This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to write equations for the dissociation constants of acids and bases and calculate their values.


Students will be able to

  • explain the term acid dissociation constant, 𝐾, and base dissociation constant, 𝐾,
  • write the general equations for 𝐾 and 𝐾,
  • write equations for 𝐾 and 𝐾 for specific acids and bases,
  • calculate the values of 𝐾 or 𝐾, giving the values the correct units,
  • describe the relationship between 𝐾 and acid strength.


Students should already be familiar with

  • acidity and basicity,
  • strong and weak acids.


Students will not cover

  • p𝐾 or p𝐾,
  • the relationship between 𝐾, 𝐾, and 𝐾,
  • calculating pH from p𝐾 and vice versa,
  • the degree of ionization.

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