quiz_07 - EML 5104 Classical Thermodynamics, Spring...

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Unformatted text preview: EML 5104 Classical Thermodynamics, Spring 2010 Quiz 7, 26 Feb 2010 Name (Print): ___________________________________ UF ­ID: ___________________________________ Please sign the honor pledge: "On my honor, I have neither given nor received unauthorized aid in doing this assignment." _________________________________ Signature Only mark one of the multiple choice answers. Use additional paper if necessary. Q1: A mixture consists of 2 kg N2, 1 kg O2, and 0.5 kg CO2. Calculate the mass fraction of each component (3 P) Q2: For the mixture of Q1, give the molar fractions of each component. Atomic weights are N: 14 g/mol, O: 16 g/mol, C: 12 g/mol (3 P) Q3: Calculate the mean molecular weight of the mixture of Q1 (2 P) Q4: Mark the incorrect statement. In a mixture of ideal gases (2 P): a) Internal energy depends on temperature and composition only b) Enthalpy depends on temperature and composition only c) The specific heats depend on temperature and composition only d) The Gibbs free energy depends on temperature and composition only Turn page! EML 5104 Classical Thermodynamics, Spring 2010 Q5: The mixture of Q1 is at a temperature of 300 K inside a Volume of 3 m3. Using the Dalton Model calculate the partial pressure of each component and the total pressure (3 P). Q6: The mixture from Q1 is at a temperature of 300 K and a pressure of 1 bar. Using the Amagat model calculate the partial volume of each component and the total volume (3 P). Q7: Consider the formation of the mixture given in Q1. All components are initially at 300 K and 1 bar. At the end of the mixing process they are at 300 K and the total pressure is 1 bar. Calculate the change of entropy during the mixing process. (4 P) Points: _______/ 20 P Turn page! ...
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