Chem_215_Lecture_2_color

Chem_215_Lecture_2_color - Read Chapter 9.1-9.6 (Doing 9.3...

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Read Chapter 9.1-9.6 (Doing 9.3 last) PS1 Due Friday, 2 PM (Problem 5, assume reactants initially at 25 o C, then do calculation for products at 25 o C then at 125 o C.)
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Exothermic Reaction (exo = out) – In non isolated system, releases heat to surroundings. – Produces a temperature increase in an isolated system – Heat of reaction, q < 0 System heat Surroundings Endothermic (endo = in) In non isolated system, absorbs heat from surroundings Produces a temperature decrease in an isolated system Heat of reaction, q > 0 System heat Surroundings
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Reactions can do work e.g.2KClO 3 (s) 2KCl (s) + 3O 2 (g)
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Pressure-Volume Work W = -P ext V
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State Functions (Depends only on state): Altitude (h) Position (x,y) Pot. Energy (PE) Path Dependent Function (depends upon path taken): Distance traveled (d) Another statement of the First Law of Thermodynamics: E = E f –E i = q + w Internal Energy (E) Heat transferred (q) Work done (w) E is a state function; q and w are not state functions
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This note was uploaded on 09/10/2008 for the course CHEM 1732 taught by Professor Davis during the Fall '08 term at Cornell.

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Chem_215_Lecture_2_color - Read Chapter 9.1-9.6 (Doing 9.3...

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