3-EnergyPathways_HeatCapacity

3-EnergyPathways_HeatCapacity - Problem Set Heating Curve...

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Problem Set Heating Curve of Benzene Lecture Note Material Heating Curve of Water
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First Law of Thermodynamics Energy Pathways, Heat Capacity Edward A. Mottel Department of Chemistry Rose-Hulman Institute of Technology
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Topics Reading assignment: Zumdahl: Chapter 9.3 This lecture describes how heat and internal energy are related to each other under selected pathway conditions. state functions heat flow heat capacity
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05/07/09 State Functions Depend only on the initial and final conditions Pathway independent Change in the function is indicated by , final - initial. Often denoted by a capital letter. · Examples: P, V, T, U, E, H. Non-state function examples: q, w.
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05/07/09 State Functions Work functions to consider: Expansion of a gas against a constant external force (P ext = constant). Expansion of a gas against a changing external force (P ext = P gas ). Increase in pressure of a gas in a rigid container ( P > 0).
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Heat Flow Heat flow is not a state function, and is therefore dependent of the path on the conditions of the reaction.
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