Lecture10A - Thermodynamics 1st Law (Chapter 19.1- 3) There...

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Thermodynamics – 1 st Law (Chapter 19.1- 3) There are three basic laws of Thermodynamics developed and formulated ~ two centuries ago. It is a classical theory, developed completely independent of omic and molecular theory It is remarkable to note that there atomic and molecular theory. It is remarkable to note that there are no known exceptions to these three laws. Some basic definitions before we start: System Boundary Separates system Surroundings rest of the universe What we’re interested in studying. from surroundings (to quote Uhura, “It’s a big place Mr. Scott”) Boundaries come in 3 types in terms of what can be transferred. Open Closed Isolated Transferred Heat, matter Heat Nothing Example Open beaker Zip-lock Perfect Lecture 10 1 bag thermos The first law is primarily concerned with three things: energy, heat, and work. In its essence, the first law is the conservation of energy. Energy, heat, and work all have the same units, Joules, so they all must be related. Let’s start first with heat. Let me introduce the Zero th law of Thermodynamics (you don’t see this everywhere!): When two systems A and B are in thermal equilibrium, they have the same temperature.
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This note was uploaded on 04/01/2012 for the course CHEM 444 taught by Professor Gruebele,m during the Spring '08 term at University of Illinois, Urbana Champaign.

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Lecture10A - Thermodynamics 1st Law (Chapter 19.1- 3) There...

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