Applications of Thermodynamics
Essential Knowledge points for the unit is located here.
You have previously learned about energy and its relationship to chemical processes (enthalpy). We will broaden our attention to other thermodynamic state functions known as entropy, a measure of "randomness," and Gibbs Free Energy, a quantity used to predict spontaneity--where the latter incorporates both enthalpy and entropy. To be discussed: spontaneous processes, entropy and the Second Law of Thermodynamics, Entropy changes in chemical reactions, Gibbs Free Energy, free energy and temperature, and free energy and the equilibrium constant.
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Topic Pages 📝
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Reference & Resources
How to Solve 🆘
Complete list of all problems below here.
Predict Entropy Changes
FREE ENERGY CALCULATIONS
ΔG° rxn = Σ ΔG° products - Σ ΔG° reactants
ΔG = ΔH – TΔS
Hess’s Law Summation
ΔG = ΔG° + RTln(Q)
ΔG° = -RTlnK “RatLink”
ΔG° = - nFE°
ELECTROCHEMICAL CELL POTENTIALS
EQUILIBRIUM CONSTANTS AND FREE ENERGY CHANGES FOR ELECTROCHEMICAL CELLS
Determining quantities of substances produced by electrolysis
Determining time required to produce a quantity of a substance by electrolysis**
Determining the current required to produce a quantity of substance in a given time period.**