Rate of chemical reactions

Key knowledge

• • Chemical reactions with reference to collision theory, including qualitative interpretation of Maxwell-Boltzmann distribution curves

  • The comparison of exothermic and endothermic reactions including their enthalpy changes and representations in energy profile diagrams

  • Factors affecting the rate of a chemical reaction including temperature, surface area, concentration of solutions, gas pressures and presence of a catalyst

  • The role of catalysts in changing the rate of chemical reactions with reference to alternative reaction pathways and their representation in energy profile diagrams.

Resources

Chemistry 2

• Chapter 5. Rates of chemical reactions, pages 136-158

Problem Solving Exercises

• Exercise 5.2 How does a chemical reaction occur? page 141, problems 1-6

• Exercise 5.3 Exothermic and endothermic reactions, page 144, problems 1-4

• Exercise 5.4 Factors affecting the rate of a chemical reaction, pages 147-148, problems 1 - 7

• Exercise 5.5 Catalysts and reaction rates, page 150-151, problems 1-5

• Ezercise 5.6 Review, pages 151-158

Presentations

• Kinetics and Thermodynamics of Chemical Reactions

• Factors that Influence the Rates of Reaction

Videos

• Maxwell-Boltzmann Distribution - Snaprevise

• Enthalpy of Reaction - Bozeman Science

• Enthalpy - Crash Course Chemistry

• The Rate of Reactions - Bozeman Science

• Kinetics: Chemistry's demolition derby - Crash Course Chemistry
  Note: you can ignore the bits on the rate laws (3:30 -8:00) ; this goes beyond the Unit 3/4 curriculum