TransPartFctnEPSolnME501F2011

- ME 501 Translational Partition Function Example Problem Calculate the entropy per kmol of monatomic hydrogen gas at 400 K 100 kPa pressure

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ME 501 Translational Partition Function Example Problem Calculate the entropy per kmol of monatomic hydrogen gas at 400 K, 100 kPa pressure. Remember that for monatomic hydrogen there are translational, electronic, and nuclear contributions to the entropy. The value listed by Sonntag and Van Wylen, Introduction to Thermodynamics: Classical and Statistical for the absolute entropy is 120.825 kJ/kmol-K. Which contributions do SVW include in their table? (Answer: translational and electronic, nuclear not included). Derive an expression for the translational enthalpy from the partition function. Calculate the enthalpy change for monatomic hydrogen between 400 K and 298 K and compare with the value of 2117 kJ/kmol listed in SVW. Solution: For atomic hydrogen:  27 27 26 3/2 5/2 2 26 23 5 3 1.00797 1.660539 10 / 1.67377 10 1 6.022142 10 52 5 ln ln ln 22 5 6.022142 10 1.380650 10 / ln 400 ln 10 2 2 1.67377 ln tr B B ma m u k g a m u k g kmol atoms m SN k T P k h J JK K m            
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This note was uploaded on 12/26/2011 for the course ME 501 taught by Professor Na during the Fall '10 term at Purdue University-West Lafayette.

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- ME 501 Translational Partition Function Example Problem Calculate the entropy per kmol of monatomic hydrogen gas at 400 K 100 kPa pressure

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