Students often underestimate Thermodynamics and Electrochemistry because it appears early in the syllabus, but AP questions here test application, not memorized definitions alone.
Entropy, Gibbs free energy, spontaneity, and redox electrochemistry including galvanic/electrolytic cells. Expect questions involving Entropy and Gibbs free energy; relationship to equilibrium; Electrochemical cells: cell notation, standard reduction potentials; Calculations of cell potential and Faraday’s laws (basic).
Try explaining this unit's core idea to someone else in under 60 seconds. If the explanation drifts, you found a gap worth fixing before test day.
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