Welcome to
Dr. Josephson's CHEN 3660 Page
HOMEWORKS
- HMWK #1 - Look at the Course Outcomes list on the syllabus. For each of the 16 Outcomes write the Chapter #
from the textbook that you think will cover the Outcome. (E.G., Outcome 1 - Chapter 2) - due M, 5/23/11
- HMWK #2 - generate x-y & T-x-y plots for the methanol-ethanol system at 1 atm. Clearly explain your process for doing so.
The following information from Yaws' Handbook of Antoine Coefficients may be of assistance: the Antoine Equation constants for methanol are
A = 8.09126, B = 1582.91 and C = 239.096. The constants for ethanol are A = 8.13484, B = 1662.48 and C = 238.131. Be aware that the Antoine Equation can also be
used to find the normal boiling points of methanol and ethanol. The particular form of the Antoine Equation for which these constants are
valid is
log P* = (A - B / (T + C))
where P* = saturation pressure in mm Hg and T is in degrees C
due W, 6/1/11
- HMWK #3
a) a feed consisting of 100 mol/hr of chemicals A and B enters a single stage separation unit. The mole fraction of A, the more volatile
component, is 0.4. 30 mol/hr of vapor leaves the separation unit (which operates under conditions such that the
relative volatility is 2). What are the mole fractions of A in the exiting vapor and liquid streams?
b) problem 4.10 from your text - due F, 6/3/11
- HMWK #4 - a 60/20/20 mixture of methanol, ethanol and iso-proponal enters a single stage separation
unit. The unit operates at a temperature of 70C and a total pressure of 760 mm Hg. What are the compositions of
the exiting vapor and liquid streams? What is the V/F fraction? Clearly explain your reasoning and any
assumptions. The following information from Yaws' Handbook of Antoine Coefficients may be of
assistance: the Antoine Equation constants for iso-propanol are
A = 7.83056, B = 1483.3 and C = 217.413 - due M, 6/6/11
- HMWK #5 - problem 4.15, parts a-d, from your text - due W, 6/8/11
- HMWK #6 - problem 7.36 from your text - omit the sidestream - a graphical method is o.k. to use - realize that you have Antoine Eqn info for
methanol and ethanol from a previous homework assignment - due M, 6/20/10
- HMWK #7 - as HMWK #6 except keep the sidestream - due W, 6/20/10
- HMWK #8 - pdf file available here - due W, 6/29/11
- HMWK #9 - problems 8.11 and 8.12 (for each only do parts a and b) from your text - due F, 7/1/11
- HMWK #10 - devise a method to quickly determine the equilibrium composition of 2 liquid phases cooresponding to a mixture given a) the
overall composition of the mixture and b) the equilibrium compositions corresponding to two tie lines that border the mixture. Explain the structure of your method
and demonstrate its use by re-doing HMWK 8 - due W, 7/6/11
- HMWK #11 - problem 15.8 from your text - due W, 7/13/10
READING ASSIGNMENTS
- Chapter 1 of the text - if you have the 3rd edition skip Section 1.9
- This web page about Raoult's Law and Ideal Mixture of Liquids
- This web page about Fractional Distillation of Ideal Mixtures of Liquids
- This web page about Non-Ideal Mixtures of Liquids
- Chapter 4, Sections 4.1 - 4.3, of the text
- Chapter 4, Section 4.4 of the text
- Chapter 7 of your text
- Chapter 4, Section 4.5 of the text
- Chapter 8 of your text
- Chapter 14, Section 14.0 of the text
- Chapter 15, Sections 15.0 and 15.2 of the text
- Chapter 11 of your text
- This is actually a Viewing Assignment - here are some lectures on Ion Exchange
EXAMS
- EXAM 1 - on Friday, 10 JUN 11
Here's the Cover Sheet, write down equations, notes, etc. on it and bring it to the exam. Note that it's a CLOSED BOOK EXAM, so if you forget your equation sheet you'll be in a world of hurt...
- EXAM 2 - on Friday, 8 JUL 11
Here's the Cover Sheet, write down equations, notes, etc. on it and bring it to the exam. Note that it's a CLOSED BOOK EXAM, so if you forget your equation sheet you'll be in a world of hurt...
You are allowed to bring a straightedge/ruler to this exam. Don't panic if you don't bring a straightedge - just make one by folding a sheet of scrap paper.
- EXAM 3 - on Wednesday, 27 JUL 11
Here's the Cover Sheet, write down equations, notes, etc. on it and bring it to the exam. Note that it's a CLOSED BOOK EXAM, so if you forget your equation sheet you'll be in a world of hurt...
- FINAL EXAM - on Wednesday, 3 AUG JUL 11
Here's the Cover Sheet, write down equations, notes, etc. on it and bring it to the exam. Note that it's a CLOSED BOOK EXAM, so if you forget your equation sheet you'll be in a world of hurt...
COURSE SCHEDULE - meets MWF with exams as shown above occurring in class. Other notable dates are shown below
- 25 MAY 11 (Wednesday) - No Class (Josephson out of town)
- 30 MAY 11 (Monday) - No Class (University Holiday)
- 24 JUN 11 (Friday) - No Class (mid-semester break)
- 4 JUL 11 (Monday) - No Class (University Holiday)
SITE DESIGN TOOLS
- Free JavaScripts (like the "Days Until" countdown) were adapted from
those found at The JavaScript
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