Exp 16 questions

[Robert Zellmer]

I'm getting a lot of questions about exp 16 in terms of what the initial
conc. of Cr^3+ should be, how to do certain things in the tables and
the graphs (set sig. fig., move the x-axis on the first-order plot from
the top to the bottom, etc.), how to choose the order, etc.

I sent 2-3 e-mails out this past week/weekend dealing with most
of this and many of these questions are answered in my help files
on my web page.

*Laboratory* 
<http://chemistry.osu.edu/%7Erzellmer/chem1220/lab/lab_1220.htm>

*Handout for Exp. 16 - Report Tips (Data Analysis)* 
<http://chemistry.osu.edu/%7Erzellmer/chem1220/lab/exp16_tips.pdf>

*Exp 16 - Help for Exp 16* 
<http://chemistry.osu.edu/%7Erzellmer/chem1220/faq/exp16_help.txt>

The last link discusses sig. fig. (how to format the numbers in the
tables to get the correct number of s.f.), initial conc. of Cr^3+ in
each tube and how that's related to the conc. of the CrEDTA-
product in the boiled solns (you use a dilution calc. to get the
initial Cr^3+ in each test tube upon mixing with the EDTA), how
many s.f. your numbers will generally have (and how to set them
in Excel), etc.

Dr. Zellmer


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