AP Chemistry – Class 32

Date

• Monday, March 16th

Advanced Thermochemistry

• Overview
• PowerPoint Presentation (Part 1)
• Chapter 19 Practice Exercises 19.1 – 19.6 (Note: complete on Notability and submit as PDF to Schoology)
• Chapter 19 notes (All sections)

Key Chapter Takeaways

• spontaneous process, reversible process, irreversible process, and isothermal process. (19.1)
• State the second law of thermodynamics. (19.2)
• Predict the sign of DS for physical and chemical processes. (19.3)
• Calculate standard entropy changes for a system from standard molar entropies. (19.4)
• Calculate entropy changes in the surroundings for isothermal processes. (19.4)
• Calculate the Gibbs free energy from the enthalpy change and entropy change at a given temperature. (19.5)
• Use free-energy changes to predict whether reactions are spontaneous. (19.5)
• Calculate standard free-energy changes using standard free energies of formation. (19.5)
• Predict the effect of temperature on spontaneity given DH an DS (19.6)
• Calculate DG under nonstandard conditions. (19.7)
• Relate DG and equilibrium constant. (19.7)