1. Overall Review CHE 1008
Chapters 1-5, 6.4, 7, 9, 11, 12, 15

2. Exam Details Date, Time, & Place: Tuesday, 20 April, 2-4 PM, FMLC
Closed book, closed notes, I will provide an equation summary sheet
Bring a calculator, ruler, pencils
Test will include
Multiple choice
Short answer
Calculations (by calculator, not Mathcad or Aspen)
Test will be comprehensive

3. What Could Be On The Exam?
Anything in the reading assignments
Hint: Review your reading. If you have marked your book carefully this will not be very difficult to do
Anything in the homework---you will not have to do Mathcad---you will have to know how to solve the problems
Hint: Review all the homework and homework keys, know how to solve every problem
Anything covered in class lectures
Hint: Review the lecture notes, make sure you understand the concepts
Anything covered in recitation

4. What Will Not Be On The Exam?
Aspen or Mathcad problems
Dialysis problems
Problems that required very detailed calculations
Multi-part problems (like the problems on the previous exams)

5. Concepts Covered Chapter 2 Phase equilibria Plotting Txy & xy VLE data
Reading & labeling Txy, xy, Ponchon-Savarit diagrams
Lever arm rule
Define & use K values
Know how to find dew-points & bubble-points (algorithms)

6. Concepts Covered Chapter 3 Describe the flash distillation process
Plot the operating line for binary flash on an xy diagram
Know how to solve sequential and simultaneous flash problems
Algorithms
Rachford-Rice & energy balances

7. Concepts Covered Chapter 4 Explain how distillation works
Sketch and label the parts of a distillation column and know how the parts work
Solve external mass and energy balances

8. Concepts Covered Chapter 5
Write & solve mass and energy balances for each stage in a column
Know when CMO is valid and why it is typically assumed
Use the operating equations for CMO distillation
Calculate feed quality
Find the number of stages and optimal feed stage using the McCabe-Thiele method

9. Concepts Covered Chapter 6 Chapter 7
Know what total reflux is and why it is useful
Know what minimum reflux is and why it is useful
Chapter 7
Know why multicomponent distillation is trial-and-error
Use assumptions to solve external mass and energy balances for multicomponent distillation

10. Concepts Covered Chapter 9 Know when the Fenske equation can be used
Use the Fenske equation to compute Nmin, NF,min, and splits of non-key components
Use the Underwood equations
Use the Gilliand correlation

11. Concepts Covered Chapter 11
Describe how simple batch distillation works
Explain how multistage batch distillation works
List the differences between batch and continuous distillation
List advantages and disadvantages of each
Solve simple batch distillation problems
Describe how to solve multistage batch distillation problems

12. Concepts Covered Chapter 12 Chapter 15
Describe different types of trays, listing advantages and disadvantages for each
Discuss the concept of efficiency
Compute the diameter of sieve and value trays
Chapter 15
Compare and contrast adsorption and stripping operations
Compare and contrast adsorption/stripping with distillation
Describe how to use the McCabe-Thiele method for adsorption and stripping
Discuss calculation of the operating lines for adsorption/stripping

13. Sample Questions List the assumptions of constant molal overflow
Given a value of a, and fractional recovery, compute Nmin
Compute the top and bottom operating lines (given sufficient information)
Identify features of Txy and xy phase diagrams
Use a Ponchon-Savarit diagram to find the enthalpy and composition of the outlet streams from a flash drum
Draw operating lines and stages on a xy diagram to estimate the number of trays in a distillation column using McCabe-Thiele analysis
You can assume that the mass flow rates of the liquid and vapor streams are constant in an absorber problem when:
(a) The solute concentrations are < 10%
(b) Henry’s law is valid
(c) The solute concentrations are ~1% or less
(d) Both (b) and (c)