Prbset07 - CHEMICAL ENGINEERING THERMODYNAMICS COURSE NO.:...

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CHEMICAL ENGINEERING THERMODYNAMICS COURSE NO.: CHEG5301 STUDENT: ___________________ COURSE: Thermodynamics INSTRUCTOR: Prof. Anderson SUBJECT: Problem Set 07 DUE: Wednesday, Oct. 8, 2008 1. The Clausius-Clapeyron equation assumes the quantity, ( ) vv B HR Z =∆ , is constant. i.e.: () ln 1 sat dP B d T =− Integrating with respect to 1/ T and introducing the constant of integration, A , yields: ln sat B PA T Apply this equation at the critical point and the normal boiling point to determine the constants A and B for both methanol and n -hexane. Use this correlaton to then predict the saturation pressure of each compound at a reduced temperature of 0.8. Compare the predicted saturation pressure with experimental values at this temperature. 2. A good estimate of the latent heat of vaporization of 1,3-butadiene at 60 ° C is required. The vapor pressure of 1,3-butadiene is given by the equation: ln . . . P T sat kPa K bg 137578 214266 3430 3. Natural gas (essentially pure methane) is being compressed prior to transmission by pipe line. The gas enters the compressor at 25
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Prbset07 - CHEMICAL ENGINEERING THERMODYNAMICS COURSE NO.:...

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