All laboratory procedures below designated with an "H" are procedures in the normal Analytical Chemistry course. An experiment such as H_Exp 1 is from the Harris text and can be downloaded. A procedure with an "L" is from the Lab Manual where LM_3 denotes Laboratory 3 of the Lab Manual. Each laboratory report is worth 20 points which includes 6 points for a prelab. Occasionally a prelab may be assessed differently. Prelabs for the experiments in the Lab Manual include the Pre-Laboratory Assignment (when present). Prelabs and Reports will be submitted through Blackboard on the links below each two week's of lab assignments.
In order to enhance the "dry" nature of the online labs real data will be given to you on which you will perform the calculations. A number of simulations, tutorials, and videos will also be incorporated into the labs.
Some lab reports require a cover sheet (CS) to be submitted. The cover sheet is a fillable pdf form whose entries are to be typed (not hand written).
Lab reports must be submitted electronically as a pdf, no cell phone pictures. You can take the picture and paste into a Word document scaled to full page then save as one pdf. There are printer/scanners that can do this as well as many free apps for phones. There are also services on the web that will do this for free. Note that the cover sheets (CS) for the Harris experiments are already fillable pdfs (forms). If you do not already have Adobe Acrobat Reader DC (for viewing, printing, commenting on pdfs, and filling out pdf forms such as the cover sheets) you can download it on the link on the main website page. If you are unable to take a picture or scan you can type your responses to any components of the lab report directly into a Word document. Of course if you have an iPad or other type of windows tablet you can write out your answers and convert to a pdf.
NOTE: Due to the difference between in-person and online labs and the difference between various labs the point distributions for different labs can vary. This is especially true for those in-person labs where precision and accuracy of your experimental technique is being assessed.
You must watch the following two videos before coming to lab (go to our Blackboard site to view the videos):
Safety Procedures and Spill Clean-up Procedures (< 7 minutes, password: schroedinger)
Safety Rules for Undergraduate Students
Please read, sign (digital signature is OK), and email to your TA before the end of the first week of class.
Laboratory Notebook
Lab Reports
Sample In-Person Prelab
Tools of the Trade - Glassware, Filtration, Drying
Titrations - Acid/Base, Finding Endpoint
Helpful Spreadsheet Commands (especially for statistics lab, H_Exp 5)
Lab Equipment in CHEM 116 Student Drawers
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1. column/row headers printed |
1. have a title |
2. significant figures used for data and results |
2. x,y axes captioned with units |
3. for each type of unique nontrivial calculation document the formula |
3. original data points shown |
a) copy Excel formula from formula bar at top of spreadsheet and paste in, e.g., A5 = "paste formula" |
4. smooth curve drawn through experimental data |
b) type or write in the actual mathematical formula A5 is calculating |
5. straight-line curves drawn by a linear least squares analysis (e.g., LINEST) with slope and intercept shown on plot |
H_Exp_1 Video - Calibrating a Buret
H_Exp_1: Calibration of Volumetric Glassware, no CS (cover sheet) for this lab
Prelab for LM_1 Data Analysis Lab - Graphing in Excel Exercise 2-F (sent in 8/15 email; due at first in-person lab session)
In your postlab for your lab report for H_Exp 1 you need to answer the Practice Problem questions in the lab manual on pp. xxxii-xxxiii - write in your notebook and submit the notebook pages.
ONLINE H_Exp_2 Video - Gravimetric Determination of Calcium as CaC2O4 . H2O
ONLINE H_Exp_2: Gravimetric Determination of Calcium as CaC2O4. H2O; CS_Exp_2
first lab report that has a cover sheet - remember to type in entries and place the cover sheet as the first page of your lab report
LM_3 Video - Cycle of Cu Reactions
LM_3: A Sequence of Chemical Reactions
NOTE: The LM_3 procedure is not the one in your lab manual. Download the above experiment
H_Exp_5 video - Data Analysis
ONLINE H_Exp_5: Statistical Evaluation of Acid-Base Indicators; CS_Exp_5
For H_Exp 5 you need to first analyze your data for each of the two indicators and see which, if any, values fail the Grubbs text (Harris Chapter 4-6 on p. 80). You must email Adrian (awierz2@uic.edu) and send a copy of the spreadsheet data to him with any outliers clearly marked. If all your data passes the Grubbs test still send the spreadsheet to Adrian. Adrian must receive these spreadsheets within 24 hours of your lab period. When all the Grubbs tests are collected, everyone's original data set will be posted here with all outliers removed. This corrected data is the one on which you will perform your statistical analysis.
H_Exp_6: Preparing Standard Acid and Base; CS_Exp_6,7
LM Calibration of a pH Meter (p. xxxviii)
H_Exp_7: Using a pH Electrode for an Acid-Base Titration; CS_Exp_6,7
For H_Exps 6 and 7 you will be doing your work with a lab partner assigned by your TA. One student does H_Exp_6 and standardizes the ~ 0.1 M NaOH and ~ 0.1 M HCl and the other will perform the LM pH meter calibration and H_Exp_7 using the standardized solutions. Whichever lab partner finishes first should help the other so that the entire experiment can be completed in the allotted time. Note that the unstandardized solutions can be used in H_Exp_7 to obtain the equivalence volumes even before the exact molarity is known. The actual molarities can be determined after lab. Due to the exam on Monday you do not need to submit a prelab before the lab period begins. However both lab partners need to write in the prelab section of their notebooks their calculation for the volume of ~50 wt% NaOH needed to prepare a liter of 0.1 M NaOH and the volume of ~37 wt% HCl needed to prepare a liter of 0.1 M HCl. Lab partners should check each other's calculation and show your calculation to your TA before the experiment is begun. By the end of the week the student doing H_Exp_6 will turn in a prelab for their part of the experiment and similarly for the lab partner doing H_Exp_7. All data will be the same for both lab partners but the lab reports, including the plots, are done individually. Each student will need to discuss their part of the experiment with their lab partner so that the procedures and objectives of H_Exps 6 and 7 are clearly understood by both students
DO NOT DISCARD THE STANDARD ACID AND BASE SOLUTIONS. They are used in H_Exp_7 and later in H_Exp_8.
ONLINE PhET Spectrophotometry Simulation Activity; CS_ONLINE Spectrophotometry
LM_5: Determination of NaHCO3, Molar Mass of CO2, and Value of R
ONLINE H_KH_4-4: Determination of Glucose in Blood Serum; CS_KH_4-4
Finish experimental work, catch up
H_Exp_8: Analysis of a Mixture of Carbonate and Bicarbonate; CS_Exp_8
ONLINE H_DU_10.5 Video - Ion Exchange Chromatography
ONLINE H_DU_10.5: Ion-Exchange Separation and Spectrophotometric Determination of Nickel and Cobalt; CS_DU_10.5
Determination of the Molar Mass and Ionization Constant of a Weak Acid
ONLINE LM_9: Stabilization of pH with Buffers; CS_LM_9
Updated: November 7, 2021 4:21 PM
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