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)

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Page 1: Lec 24, Entropy, Chem 4A F08, Saykally 24, E… · • Spontaneity(2nd Law, entropy, free energy) • Equilibrium(Gibbs free energy, K eq, wet chemistry) Second Law of Thermodynamics-The

10/27/08

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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)

Page 2: Lec 24, Entropy, Chem 4A F08, Saykally 24, E… · • Spontaneity(2nd Law, entropy, free energy) • Equilibrium(Gibbs free energy, K eq, wet chemistry) Second Law of Thermodynamics-The

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Page 3: Lec 24, Entropy, Chem 4A F08, Saykally 24, E… · • Spontaneity(2nd Law, entropy, free energy) • Equilibrium(Gibbs free energy, K eq, wet chemistry) Second Law of Thermodynamics-The

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Fig. 13-2, p. 533

Fig. 13-3, p. 534

Page 4: Lec 24, Entropy, Chem 4A F08, Saykally 24, E… · • Spontaneity(2nd Law, entropy, free energy) • Equilibrium(Gibbs free energy, K eq, wet chemistry) Second Law of Thermodynamics-The

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BLACKBOARD

The Second Law

Page 5: Lec 24, Entropy, Chem 4A F08, Saykally 24, E… · • Spontaneity(2nd Law, entropy, free energy) • Equilibrium(Gibbs free energy, K eq, wet chemistry) Second Law of Thermodynamics-The

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ChemQuiz© 24.1

ChemQuiz© 24.2