OldExam1ME525SP2008

# OldExam1ME525SP2008 - 1 Name ME 525 Exam#1 Prof Lucht Room...

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1 Name___________________________ February 18, 2008 Prof. Lucht Room 156 Mechanical Engineering, 7:00 – 8:30 pm EXAM INSTRUCTIONS Write your name on each work sheet. At the end of the exam be sure to turn in all your work pages, and staple any extra work sheets to the work sheets provided. This exam is closed book and closed notes. Equation sheets and thermodynamic tables are attached at the end the exam booklet. When working the problem, list all assumptions, and begin with the basic equations. On this exam, numerical calculations will be much easier if you work in concentration units of gmol / m 3 . Problem #1 /70 Problem #2 /30 Total /100 ME 525 Exam #1

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2 ME 525 Exam #1 18 Feb 2008 Name___________________________ 1. (70 points) (a) For a fixed mass, constant pressure reactor the time derivative of temperature is given by      , CV i i i iP i i Qh dT dt X c  Starting from the expressions NX dN dt PN R T ii i ij j u   show that for the constant pressure reactor the time derivative of the concentration for species i is given by dX dt X X T dT dt i j j j j  R S | T | U V | W | 1 (b) Consider the following reaction mechanism:  53 1 32 1 63 2 2 2 83 3 23 73 4 24 10 exp 10,000/ / sec 10 exp 2000/ / sec 2 10 exp 40,000/ / sec 4 10 exp 400/ / sec k O M O O M k T m gmol k OO k T m g m o l k O N N NO k T m gmol k N O O NO k T m gmol    
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OldExam1ME525SP2008 - 1 Name ME 525 Exam#1 Prof Lucht Room...

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