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Thermodynamics (A-level only) study guide
Study Thermodynamics (A-level only) with curriculum-aligned Study Guide resources, practice links, and exam-focused support.
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study guide
Resource type
Topic
Thermodynamics (A-level only)
AqaA LevelChemistryPhysical chemistry
Study guide overview
Thermodynamics Study Guide
This guide provides an overview of thermodynamic principles relevant to A-Level Chemistry.
Thermodynamics Study Guide
Key Concepts
- Lattice Enthalpy
- Understand how to construct Born-Haber cycles and calculate lattice enthalpy.
- Be able to compare experimental and theoretical lattice enthalpies and discuss implications for ionic and covalent character.
- Entropy
- Define entropy and its significance in thermodynamics.
- Calculate entropy changes using standard entropy data and understand the implications for reaction spontaneity.
- Gibbs Free Energy
- Learn to use the Gibbs free energy equation (ΔG = ΔH - TΔS) to assess reaction feasibility.
- Recognize that a negative ΔG indicates feasibility but does not ensure a reaction will occur at a practical rate.
Study Tips
- Practice constructing Born-Haber cycles and calculating lattice enthalpy.
- Work on problems involving entropy changes and Gibbs free energy calculations.
- Review case studies of reactions with negative ΔG that do not proceed quickly to understand the role of kinetics.
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