GRADE 12 – UNIT 1: ACID-BASE EQUILIBRIA

By The Atenu Team Categories: Chemistry
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About Course

This unit explores acid-base concepts, including the limitations of the Arrhenius definition and the broader Bronsted-Lowry and Lewis theories. Key topics include the dissociation of water, weak acids, bases, and equilibrium calculations (Ka, Kb, pH, pOH). Students will study the common ion effect, buffer solutions, salt hydrolysis, and acid-base titrations, with real-world examples like buffering in biological systems. Practical skills include solving pH problems, predicting solution properties, and writing balanced chemical equations.

What Will You Learn?

  • Describe the draw backs of Arrhenius, acid base concepts.
  • Define Bronsted-Lowery and Lewis concepts of acids and bases.
  • Describe the dissociation of water, weak mono-protic and polyprotic acids, and weak bases.
  • Solve equilibrium problems involving concentration of reactants and products,Ka, Kb, PH and POH.
  • Discuss the common ion effect, buffer solution, hydrolysis of salts, acidbase
  • indicators and acid-base titrations.
  • Explain how buffering action affects our daily lives using examples.
  • Determine the equivalents of acid or base that are required to neutralize specific amount of acid or base.
  • Predict, in qualitative terms, whether a solution of a specific salt will be acidic, basic or neutral.
  • Explain how to solve problems involving concentration and pH of acidbase titration.
  • Write chemical equations.

Course Content

UNIT 1: ACID-BASE EQUILIBRIA

  • Acid-Base Concepts
  • Ionic Equilibria of Weak Acids and Bases
  • Common Ion Effect and Buffer Solution
  • Hydrolysis of Salts
  • Acid-Base Indicators and Titrations
  • Virtual Simulator

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