3473-11 Lecture Outline 7

3473-11 Lecture Outline 7 - 7 1 of 2 CHE 3473 Fa11 Whiteley...

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7 – 1 of 2 CHE 3473 – Fa11 Whiteley Lecture 7 (9/7/11) Assigned Reading 2 nd law; thermal efficiency; entropy Smith, Van Ness, Abbott 7 th ed. (SVNA7) Ch. 5, pp. 159 - 175 Assignments Handouts (on web unless stated otherwise) HW #2 due Thu, Sep 8 Smay Walk-away Points on Entropy.pdf Disorder – a cracked crutch for…pdf Outline 1. Complete Lecture 6 2. Observations from nature that motivate formulation of the 2 nd law of thermodynamics 3. Initial thoughts on entropy 4. The 2 nd law: qualitative statements 5. The Carnot heat engine and cycle as a precursor to development of the entropy concept 6. Inferring the existence of entropy as a physical property 7. The defining relation used to establish the relationship between entropy and other measurable quantities 8. Relation used to calculate entropy changes for an ideal gas Key Concepts 1. There is nothing arbitrary about the direction of changes that occur in nature. The 2 nd law captures this attribute of how nature works.
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3473-11 Lecture Outline 7 - 7 1 of 2 CHE 3473 Fa11 Whiteley...

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