Chem238 Quiz #2 Study Guide
The quiz will take place in AS1614B from 6-7pm on Thursday, March 9th. The exam will be
worth 100pts and you will be given 1 hour. Please bring your notebooks to turn in on
Thursday.
The quiz will cover Extraction (#4), synthesis of 4-methylcyclohexene (#23), Spinach TLC
(#15), Green Chemistry (borneol oxidation and CO2 extraction), and Separation and Purification
(#55). NMR and IR spectroscopy will be included on this quiz.
Any pre lab or post lab questions are good examples of what can be on the test.
Extraction (#4)/Exp.#55
-Review the basic solubility rules and know how to predict solubility.
-Understand the flowcharts on pgs. 76 and 613 of PLKE and be able to outline a separation
scheme.
4-methylcyclohexene (#23)
-Know the reaction mechanism for the dehydration of an alcohol.
-What are the differences between the NMR and IR of the starting material and the product?
-How did you insure that the equilibrium of the reaction was shifted to the right (products)?
-Be able to calculate the % yield of the product.
Spinach Chromatography/TLC (#15)
-Know the basic theory of chromatography and TLC. Please read technique 12 (12.1-12.4B) and
technique 14 (14.1 and 14.9).
-Know how to predict Rf values based on the developing solvent.
-Know how to predict how fast a compound will travel up the TLC plate.
Green Chemistry—Borneol Oxidation and CO2 Extraction
-Know the principles of green chemistry. Be able to determine the ‘green’ aspects of a chemical
reaction.
-Know the aspects of the Borneol Oxidation and CO2 Extraction experiments that were
considered green.
IR/NMR
-Be able to identify an unknown from an IR spectrum and a set of BP’s.
-Be able to assign and interpret an NMR spectrum. Know how to determine integration values.
(Please read NMR.3 (A35)).