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Internal Pressure & Thermal Expansion: Properties of Ideal Gas for Machinery Study

Explore the 1st Law and properties of internal pressure (πT) and thermal expansion coefficient (α) in chemical engineering machinery. Derive an expression for an ideal gas and compare energy terms.

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Internal Pressure & Thermal Expansion: Properties of Ideal Gas for Machinery Study

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  1. CHEM 433 – 10/7/11 III. 1st Law: “Machinery” (2.10) - Properties of dU= - Internal Pressure (T) - Thermal Expansion Coefficient () - Properties of dH = (maybe?) READ: FINISH CHAPTER 2 HW # 4 DUE HW# 5 out today – Due Next F

  2. For an Ideal gas: V(T,p) = nRT/p Derive and expression for a for an ideal gas.

  3. An Illustration of the magnitude the effect of T: Let’s assume that U= T,mV + Cv,mT At 1.0 bar, heat 2.0°C, and compress by 100. cm3. Cv,m = 27.3 J/mol K T= 840 Pa/mol Calc U and compare terms (i.e. V vs. T):

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