Chemistry 222

(4/25/05): (1) Please sign up to make GC measurements. Remember to open and close the He tank to the GC. (2) In your chromatograms, you may see a sharp peak with retention time of ~8.2 min. This is probably due to acetic acid (yum!). You do not need to quantify acetic acid in your data analysis. (3) We will not be meeting for class or lab on Thursday 4/28, but we will be meeting for class on Monday 5/2. (4) Whenever you are done with your Experiment 5 lab work, make sure you have a complete inventory of equipment in your cabinet, and come find Brinton or me to check you out of lab. (5) Please fill out the on-line course evaluation form by May 9.

(4/11/05): Here is the Test 3 Preview Sheet. The test is this Thursday at 8:30 a.m. in Olin-Rice 350.

(4/8/05): (1) Please note the following corrections to class notes on Friday. (Thanks to Kara and Khiza for pointing these things out!) (2) I will be staffing the office hours this Sunday afternoon from 3-5 p.m. Come by with questions on Problem Set 7, or on anything else from class. (3) On Monday, I will finish comments on the nicotine + HCl example. I will leave time at the end of class for questions on Problem Set 7. (4) As I mentioned in class, there is an internship opportunity at Medtronic for people who have taken Analytical Chemistry! Click here for details.

(4/2/05): (1) Problem Set 6 is now due on Monday, April 4, by 5 p.m. There will be tutoring available Sunday from 3-5 p.m. in my research lab (Olin-Rice 364). (2) If you e-mailed me a rough draft of your Experiment 3 paper on Friday, I will return comments to you by Monday. Your Experiment 3 paper, notebooks, and spreadsheet are due Wednesday, April 6. (3) Be sure to sign up for a two-hour time slot to make measurements for Experiment 4. You can print out an copy of the instructions.

(3/28/05) (1) We will be meeting in OR 350 at 8:30 a.m. this Thursday (3/31) instead of meeting in lab. (2) The due date for Experiment 3 (your notebook and your paper) has been postponed to Wednesday, April 6. You have until this Friday to turn in a optional rough draft for "no-penalty" feedback.

(3/24/05) Here is the distribution of midterm grades, based solely on your scores on Tests 1 and 2. You can pick up Test 2 (stapled shut) from the box next to my office door. It's great to be back! Look forward to seeing you all on Monday.

(3/11/05): Much thanks to Rob Rossi for filling in for me until spring break! (For those who don't know, I will be presenting two posters at a meeting of the American Chemical Society in San Diego, California, next week.) Here is a copy of the Test 2 preview sheet. Test 2 will be on Thursday, March 17, starting at 8:30 a.m., in Olin-Rice 350. Also remember to turn in PS 5 on Monday, and make your AA measurements during your time slot.

(3/4/05): Please remember to e-mail me your spreadsheets for Experiment 2 when you turn in your notebooks on Monday. Also remember that the Fe(II) stock solution had a concentration of 7.1₄ x 10^-4 M.

(3/1/05): (1) Note that for Experiment 2, the Fe(II) stock solution had a concentration of 7.1₄ x 10^-4 M. (2) Remember that each lab team is responsible for obtaining three soil samples for lab on Thursday.

(2/24/05): Note the revised spectrophotometer instructions for Experiment 2.

(2/18/05): (1) Remember that your notebooks for Experiment 1 are due Monday at 5 p.m. Even if your lab team decides to turn in only one data analysis, everyone must turn in his/her notebook for grading. (2) If you did not pick up your test yet, I will leave them (stapled shut) in the big Chem 222 envelope pinned next to my office door. If you come by my office, you should also pick up a copy of Howard Mielke's article on lead--copyright restrictions prevent me from posting it on the web page.

(2/14/05): (a) Harris Problem 8-15 has a typographical error. In part (b), it should read, "The observed total concentration of dissolved calcium is 1.5-1.9 mM." (Harris is too high by an order of magnitude.) The issue to explain in part (b) is why the actual [Ca2+] is lower than the predicted value. I am instructing the grader to mark part (b) leniently, so don't worry about losing points due to the textbook error. (b) Here is the Test 1 Preview Sheet. Remember that Test 1 will be this Thursday in Olin-Rice 350 starting at 8:30 a.m.

(2/3/05): Senior chemistry major Luke Valin will be available for tutoring again this Sunday. He will be in Olin-Rice 364 at his normal time of 3:00-5:00 p.m.

Go back to my home page!

Last modified 2 May 2005