Thermochemistry Gibbs Free Energy, Entropy, and Spontaneity.
Lec 24, Entropy, Chem 4A F08, Saykally 24, E… · • Spontaneity(2nd Law, entropy, free energy)...
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10/27/08 1 Part I(Pines) • Stoichiometry(chemical arithmetic) • Atomic and Molecular Structure(quantum theory) • States of Matter(gas, liquid, solid) Part II(Saykally) • Energetics(1st Law, enthalpy, work, heat) • Spontaneity(2nd Law, entropy, free energy) • Equilibrium(Gibbs free energy, K eq, wet chemistry) Second Law of Thermodynamics -The Disorder of the Universe Increases in any Real Process -Some Energy is Used to Create Disorder Disorder = Entropy Universe = System + Surroundings Real = Finite Time -Heat Flows from Hot to Cold(Clausius statement)
Transcript of Lec 24, Entropy, Chem 4A F08, Saykally 24, E… · • Spontaneity(2nd Law, entropy, free energy)...
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Part I(Pines) • Stoichiometry(chemical arithmetic)
• Atomic and Molecular Structure(quantum theory)
• States of Matter(gas, liquid, solid)
Part II(Saykally) • Energetics(1st Law, enthalpy, work, heat)
• Spontaneity(2nd Law, entropy, free energy)
• Equilibrium(Gibbs free energy, Keq, wet chemistry)
Second Law of Thermodynamics
-The Disorder of the Universe Increases in any Real Process
-Some Energy is Used to Create Disorder
Disorder = Entropy Universe = System + Surroundings Real = Finite Time
-Heat Flows from Hot to Cold(Clausius statement)
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Fig. 13-2, p. 533
Fig. 13-3, p. 534
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BLACKBOARD
The Second Law
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ChemQuiz© 24.1
ChemQuiz© 24.2