CHEM 130 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 not all lab reports will be graded thoroughly.
    • 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 the chemlab.truman.edu site.  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.
  • Record filenames for all computer files and plots.
  • 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

Lab manual is online at
http://chemlab.truman.edu/files/2017/01/CHEM-130-Laboratory-Manual-2016.pdf

Date: Experiment Lab report due:
8/23 No Lab N/A
8/30 Training, safety paperwork due on Blackboard by 5:00 PM on Thursday, September 1 N/A
9/6 Labor Day on 9/5, NO LABS N/A
9/13 Determination of Density. Check-in 9/20
9/20 Preparation of Alum (Week 1): Synthesis of Alum. 9/27
9/27 Preparation of Alum (Week 2): Gravimetric Analysis of Alum. 10/4
10/4 Preparation of Alum (Week 3): Colorimetric Determination of Aluminum. 10/18
10/11 Fall Break 10/13-10/14, NO LABS N/A
10/18 Hydrolysis of Oil of Wintergreen. 10/25
10/25 Determination of Molar Mass by Titration 11/1
11/1 Determination of Vitamin C. Handout to supplement lab manual.
11/15
11/8 Determination of Vitamin C. (Week 2) 11/15
11/15 Enthalpies of Solution 11/29
11/22 Thanksgiving, NO LABS
11/29 Kinetics of Crystal Violet Bleaching. 12/6
12/6 Determination of an Equilibrium Constant./Check-out. 12/14