Chemistry 2290

Home Contact News Research Group Research Interests Publications Open Positions Undergraduate Projects Teaching        CHEM 2290        CHEM 3360 Department       Return to       Departmental       Course Page University Home Contact News Research Group Research Interests Publications Open Positions Undergraduate Projects Teaching        CHEM 2290        CHEM 3360 Department       Return to       Departmental       Course Page University Home Contact News Research Group Research Interests Publications Open Positions Undergraduate Projects Teaching        CHEM 2290        CHEM 3360 Department       Return to       Departmental       Course Page University

Specific Course Notes, Winter 2012     Notes and Announcements     (In reverse chronological order.) Have a good summer! Tentative grades here. (These grades are tentative until they have been approved by the university.) The class average is 71.6% (2011: 73.0%). (April 24, 2012) Final exam now marked; see below. (April 24, 12) New material posted, see below (April 9, 12): draft formula sheet for final exam; a few more suggested problems; answers to the remaining suggested problems. Exam preparation: I will be around during work days prior to the final exam. As before, you are welcome to drop by or make an appointment. A bit of housekeeping: Sample solutions to assignments 4 and 5 posted; see also the comments on how assignment 5 is being marked. Moreover, I have corrected the file for "suggested problems part 9". It should work now. I will be out of town March 25 to 29. Dr. Bartels has kindly agree to cover the lectures on March 26 and 28 − thank you! New set of suggested problems (part 9) posted (March 22, 12). This set refers to the final major section of the course, electrochemistry. We are just starting with this subject. The final exam has been (tentatively) scheduled for Apr 16 1:30−4:30 PM, E2-165 EIT Complex. (March 13, 12). Information regarding midterm 2 now posted (March 7, 12). Formula sheet slightly updated March 8. Text on, and derivation of, phase rule posted below. I think this is quite instructive, and I encourage you to have a look. New suggested problems as well. (March 7, 12) Figure from Feb. 8 lecture on adiabatic demagnetization and solutions to LM problems now posted, see below (Feb. 8, 12). Information regarding midterm 1 now posted (Feb. 7, 12). Dr. Bartels is offering to run tutorials on Fridays, 2:30pm (time to be confirmed), if there is interest. I will ask about interest in class next week. (Posted Jan. 27, 12) I have posted some notes on significant figures (jpg file), courtesy CHEM1300 and Dr. J. Xidos. See below. Third set of suggested problems posted as well. (Jan. 27, 12) Assignment 2, Jan 25 (due Feb. 1); see below. Solutions to assignment 1 now posted (Jan. 23, 12). New set of suggested problems posted (Jan. 18, 12). Comment regarding question 7 of assignment 1 posted Jan. 13, see below. I have posted the first set of "suggested problems", see below (Jan. 6, 2012). I plan to do problems in class, starting next week. While I can and will make my own choices, I am also open for suggestions. Thus, please let me know about problems that you want me to do in class.     Suggested Problems     Some problems from Engel/ Reid and other sources for practice (pdf format). To be updated regularly. Notes: (i) When printing stuff, please consider saving paper by printing double-sided! (Or don't print it at all ...) (ii) As noted on some of the sets, I only provide a sample of questions and problems − there are many other good examples in Engel & Reid and the other textbooks. So, if you want more practice, by all means do extra problems! (iii) The Laidler problems generally assume 3 (or more, if provided) significant figures; I haven't always typed them out in that manner. Solutions to LM and A problems, parts 6 to 10 (posted April 9, 2012.) Suggested problems, part 10 (posted April 9, 2012.) Suggested problems, part 9 (posted March 22, 2012; file corrected April 2, 2012.) Suggested problems, part 8 (posted March 15, 2012.) Suggested problems, part 7 (posted March 7, 2012.) Solutions to LM problems, part 5 (posted Feb. 27, 2012.) Suggested problems, part 6 (posted Feb. 21, 2012 − note that some of the problems refer to parts of the lecture that have not yet been covered at the time of posting.) Suggested problems, part 5 (posted Feb. 16, 2012.) Solutions to LM problems, parts 1 to 4 (posted Feb. 8, 2012.) Suggested problems, part 4 (posted Feb. 2, 2012.) Suggested problems, part 3 (posted Jan. 27, 2012.) Suggested problems, part 2 (posted Jan. 18, 2012; minor typo corrected Jan. 24.) Suggested problems, part 1 (posted Jan. 6, 2012.)     Additional Course Material     Miscellaneous material related to course notes and content. Notes on phase rule, including a formal proof. (Atkins, de Paula, 9th ed., posted March 7, 12.) Figure from Feb. 8 lecture on adiabatic demagnetization here (Laidler, Meiser Sanctuary, Physical Chemistry, 2nded.) Some notes on significant figures (jpg file), courtesy CHEM1300 (1st year chemistry) and Dr. J. Xidos (posted Jan. 27, 12).     Assignments Sample solutions, assignment 5 (scanned copies of my notes; posted April 2, 2012). Assignment 5 (Mar. 23, 2012 − this is now the correct problem set). Comment on marking: Regarding the electrochemistry questions, I am marking as follows: Q1 and Q3, marked as is, but assume some T for Q3; Q2 not marked (not the least given the typos in this questions); Q2 only the Gibbs energy parts are marked; the enthalpy and entropy parts may result in bonus marks. Sample solutions, assignment 4 (scanned copies of my notes; posted April 2, 2012). Assignment 4 (Mar. 16, 2012). Sample solutions, assignment 3 (scanned copies of my notes; posted March 12, 2012). Assignment 3 (Feb. 27, 2012). Sample solutions, assignment 2 (scanned copies of my notes; posted Feb. 2, 2012). Assignment 2 (Jan. 25, 2012). Sample solutions, assignment 1 (scanned copies of my notes; posted Jan. 23, 2012). Assignment 1 (Jan. 11, 2012). The van der Waals coefficients for He are as follows: a = 0.0341 L2 atm mol-2; b = 0.0238 L mol-1. (Constants taken from Atkins, Physical Chemistry, 9th ed.)     Exam Information (Midterms, Finals) Final exam: Final exam now marked. Class average 39.1/62 (63.1%). (For comparison, 2011 final: 74.3%.) Exam preparation: I will be around during work days prior to the final exam. As before, you are welcome to drop by or make an appointment. The final exam has been (tentatively) scheduled for Apr 16 1:30−4:30 PM, E2-165 EIT Complex. Draft formula sheet for the final exam here. Please point out any errors, omissions, inconsistencies and so on! Sample final exam from 2011 here. Please note my comments on the top of the document. Midterm 2 now marked. Class average 10.1/15 or 73.2%. (This can be compared to the misterm 2 of 2011: 9.3/15 or 62.0%) Sample solutions (posted March 12).       Comment on Q4b: Alternatively, this can also be done using the Gibbs-Helmholtz equation. The result is the same. As announced in class, the cutoff for midterm 2 is after the lever rule (in the middle of section 8.2 in my lecture notes). Midterm 2 will focus on the material after midterm 1, however, there may be the need to draw on earlier material. (E.g. you may need to use the First Law of Thermodynamics for calculating free energies.) Draft formula sheet for the current midterm 2 here. Please point out any errors, omissions, inconsistencies and so on! --- Formula sheet slightly updated March 8. Sample midterm 2 from 2011 here. Note the somewhat different cutoff for the material! (This concerns questions 3 and 4; obviously, this material will be included in the overall scope of the final exam.) Midterm 1 now marked: sample solutions (posted Feb. 16; percentages corrected Feb. 22); class average 9.96/14 or 71.1%. (This can be compared to the misterm 1 of 2011: 11.4/16 or 71.0%) As announced in class, the cutoff for midterm 1 is at the end of the lecture section on the 2nd Law of Thermodynamics (end of section 4 in the lecture notes.) Draft formula sheet for the current midterm 1 here. Please point out any errors, omissions, inconsistencies and so on! Sample midterm 1 from 2011 here.     Course Syllabus Course syllabus: posted here (in pdf format)     General Course Notes Instructor:   H. Georg Schreckenbach    Office: Parker building 552    Phone: (204) 474-6261 (voice mail available)    FAX: (204) 474-7608 (chemistry department)    E-mail: schrecke@cc.umanitoba.ca Lab Instructor:   Dr. Carl Bartels   (Office: Parker building 350) Lab Webpages:   on ANGEL Course Title:   "Chemical Energetics and Dynamics: Macroscopic Descriptions" General Outline:   This course covers the fundamentals of chemical thermodynamics with applications to topics such as chemical potential, solution chemistry phase diagrams, and electrochemistry. The course consists of three components, (i) lecture, (ii) laboratory, and (iii) problem solving (covered by assignments and suggested problems.) Tentative Course Outline:   (updated Jan. 6, 2012) Introduction (1 lecture) - Mathematical tools (Engel, appendix A2, A4, A6) Equations of state (Engel, chapters 1 and 7) (1 week) - Definitions, ideal gases, van der Waals equation, Virial equation, corresponding states Zeroth and First Laws of thermodynamics (Engel, chapters 2 to 4) (1 1/2 weeks) - Work, heat, internal energy, First Law of thermodynamics, heat capacity, enthalpy, thermochemistry The Second Law of thermodynamics (Engel, chapter 5) (1 week) - Carnot cycle, entropy, Second Law The Third Law of thermodynamics (Engel, chapter 5) (1 lecture) Fundamental concepts of thermodynamics (Engel, chapter 6) (1 ? weeks) - Gibbs and Helmholtz energies, Maxwell relations, Gibbs-Helmholtz equation, chemical potential Chemical Equilibrium (Engel, chapter 6) (? week) - Equilibrium constant, le Chatelier's principle, van't Hoff equation Phases (chapter 8) (1 ? weeks) - Phase diagrams, phase rule, Clapeyron equation, Clausius-Clapeyron equation Solutions (Engel, chapters 9 and 10) (1 1/2 weeks) - Partial molar quantities, ideal and non-ideal solutions, Gibbs-Dunhem equation, Raoult's Law, Henry's Law, colligative properties, solvent and solute activity Electrochemistry (chapters 10 and 11) (1 1/2 weeks) - Electrolytes, electrochemical cells, Nernst equation, batteries, fuel cells This is a tentative outline that can still change in some of the details as we go along. The timings are likewise approximate. Textbook:   T. Engel, P. Reid, "Physical Chemistry", 2nd ed., Prentice Hall, As a comment, we have chosen the book by Engel and Reid in order to have the same text for CHEM 2280 and CHEM 2290.    Supplementary textbooks:    - K. J. Laidler, J. H. Meiser, B. C. Sanctuary, "Physical Chemistry", 4th edition.    - P. Atkins, J. de Paula, "Physical Chemistry", 8th or 7th eds., Freeman Remark on Mathematical Tools:   Physical Chemistry is, in general, the application of the principles of physics to chemistry. In order to describe the physics (and thus the physical chemistry) appropriately, a good command of the language and tools of mathematics is necessary! In this course, we will, specifically, make frequent use of (i) integrals, (ii) differentiation, and (iii) partial derivatives, as well as, to a lesser degree, of differential equations. These mathematical tools will be reviewed briefly in class. Reviews are also available in the textbooks. Feedback:   I appreciate feedback (such as about the course or about the websites), both formal (such as through the course evaluations) and informal!