Lecture 3

# Lecture 3 - Read Chapter 9.1-9.6(Doing 9.3 last PS1 Due...

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1 Read Chapter 9.1-9.6 (Doing 9.3 last) PS1 Due Friday, 2 PM (In Problem 5, heat capacity is C P )

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2 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: Δ E = E f –E i = q + w Internal Energy (E) Heat transferred (q) Work done (w)
3 - Combustion reaction carried out in a sealed bomb - Volume is constant - heat released = C Δ T, where C is heat capacity of entire calorimeter - need to calibrate apparatus (determine C) by measuring Δ T for known q W = 0 ( Δ V = 0) Δ E = q + w = q = q v Bomb Calorimeter

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4 Bomb Calorimeter - Combustion reaction carried out in a sealed bomb - Volume is constant - heat released = C Δ T, where C is heat capacity of entire calorimeter - need to calibrate apparatus (determine C) by measuring Δ T for known q W = 0 ( Δ V = 0) Δ E = q + w = q = q v E i E f Δ E = q V q V
5 Coffee-Cup Calorimeter Reaction occurs under the constant pressure

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## This note was uploaded on 04/16/2009 for the course CHEM 2150 taught by Professor Chirik,p during the Fall '08 term at Cornell.

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Lecture 3 - Read Chapter 9.1-9.6(Doing 9.3 last PS1 Due...

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