[CHM 112 Lab] practice exam key

[Jeffrey Hugdahl]

Now attached.

Still I suggest trying to work through the problems before looking at my mostly correct solutions (I guarantee nothing so if you are having a lot of trouble getting the answer I got, there is still the possibility that I made a mistake - I didn't take very long constructing the key).

Practice problems as if you were taking them on an exam. Start to finish. Watch your time. Word problems are constructed to take up to about 9 minutes each (a couple of minutes reading and thinking about the approach/model, and then actually calculating and writing down your solution. Multiple guess problems are a bit different. Some of them are designed for under a minute while others will take longer. The ACS exam you will be taking at the end of the term will be 50 questions to be completed in 60 minutes or less. You can do the math.

Tomorrow in class, we will finish up the van't Hoff factor (i) that indicates a degree of dissociation of ions in solutions to account for their effects on colligative properties. And then we will answer questions until you all get tired.

Dr. H

_________________________________________________________
Jeffrey Hugdahl                      478-301-5307
Professor of Chemistry           478-301-2802 (fax)
Department of Chemistry         hugdahl_jd at mercer.edu
Mercer University
Macon, GA 31207
_________________________________________________________


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