Exp. #24 Determining a Solubility Product Constant Grading Rubric

This experiment is worth 110 total points and the TA's will grade the report as follows:

10 pts: Lab Notebook
In the lab notebook section you should write out an outline of the procedure (ask your TA what they expect for this section as they are assigning the grade and their styles will vary). You should also write down all numerical results in the lab notebook. You need to sign the bottom of each page and your TA also needs to initial and date each page. Once both of you sign off you will hand your carbon copy sheets to your TA.


25 pts: Completion of Example Problems 1-5
These problems will be graded by your TA on effort, completeness, and neatness. Show all work clearly on a separate sheet of paper (your lab notebook would be perfectly fine or some other sheet).

35 pts: Sample Calculations and data on Report Sheet
A sample calculation from one of your trials must be shown for items 3, 4, 6, and 7 from Part B. of the report sheet. Each calculation is worth 5 points and the calculation for the Ksp is worth 15. These should be written out neatly on a separate sheet labeled Sample Calculations.

40 pts: Report Questions Assessment on Carmen
On Thursday evening I will post a quiz on Carmen titled Experiment #24 Report Questions. It will be due Thursday, January 14th at midnight. These questions, based on the example problems, will be graded on accuracy and you will have 5 attempts for each quiz and your highest score will count towards your lab report grade. Each quiz will have similar problems, but the values for each problem will be slightly different.

All of these sections should be stapled together and your cover page should be the Experiment #25 Report Form and should look like this.

This gives a total of 110 points. The lab report will be due at the beginning of the class on Wed., Jan. 13th or Thurs., Jan. 14th depending on which day you have lab.

Let me know if you have any other further questions. Thanks, Dr. Fus