CHEM 131 Lab


General Lab Information

    • As seen on the schedule below, lab write-ups are due a relatively short time after lab is completed. This means that you should tie up any calculations, conclusions and discussions quickly. It is best to tie them up in a time frame close to that of class time, as the tendency to forget makes it more difficult with time.
    • All labs will be collected, though only 5 will be graded. These will be worth 25 points each.
    • Those labs which are not graded may be reviewed and some comments given.
    • Those labs that are graded may have different point worth assigned for different sections; however, your Data and Results sections will generally carry the greatest point worth.

Lab Notebook Comments:

I expect that you will read and follow the guidelines outlined in “The Laboratory Notebook” section of your lab manual.  Please be sure to keep the following items in mind as you complete your notebooks.

  • Very clearly label each of the individual sections in the notebook. There should be only one procedural section including all subsections grouped together. There should only be one data section, etc…
  • Write all information into your notebooks directly using permanent ink, making sure that a duplicate copy is made. Do not transfer information into the book from pieces of paper towel or the margins of your lab manual.
  • Do not erase any information or use white-out. Instead, if you make an error, correct it by drawing a single bold line through the error and initial it. A comment on why the correction was made often helps you remember
  • Clearly label all entries in the notebook. Be certain to include units with all numbers and measurements. Also be aware that every graph and table needs to be titled and any graph axes must be appropriately labeled.
  • Affix all graphs and loose pages that are generated in the laboratory or by using spreadsheets directly into the results section.
  • If a calculation is made to arrive at an answer, show one example of each calculation in a clearly labeled fashion.
  • Sign and Date each page when completed.
  • All sections are to be written in your own words.

Lab Schedule

Date Experiment Due date
1/17 Combined Blackboard sections open for paperwork on Monday morning and must be completed prior to attending lab.
Qualitative Analysis (Week 1): Analysis of Cations. Check-in.
1/24 Qualitative Analysis (Week 2): Analysis of Anions. 1/31*
1/31 Qualitative Analysis (Week 3): Analysis of Unknowns. 2/7
2/7 Molecular Modeling 1: Classic Molecular Modeling 2/14
2/14 No laboratory due to University Conference on February 16.
2/21 Synthesis and Characterization of Coordination Compounds (Week 1): Synthesis of Coordination Compounds 2/28
2/28 Synthesis and Characterization of Coordination Compounds (Week 2): Kinetics of [trans-Co(en)2Cl2]Cl Hydrolysis 3/13
3/6 No laboratory due to Midterm Break.
3/13 Synthesis and Characterization of Coordination Compounds (Week 3): Characterization of K3[Fe(ox)3]   3/20
3/20 Analysis of a Mixture: “Glowmatography” 3/27
3/27 Electrochemical Investigations 4/3
4/3 Environmental Chemistry (Planning and sampling)
4/10   Environmental Chemistry (Experimentation) 4/24
4/17 No laboratory because of SRC on April 17.
4/24 Environmental Chemistry presentations Check-out.






*Formal conclusions sections are not required at these due dates.  You only need to turn in pages with the Statement of Purpose, Procedure, and results (including balanced chemical equations for all reactions).