216%20S07-E1 - Chemistry 216 First Examination May 24,2007...

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Chemistry 216 First Examination May 24,2007 Professor Masato Koreeda (1.25 hr, 80 points) Please CHECK OFF your lab section. s ectn # aSI Name ----------- Please Print Signature _ Student ID # ---------- 130 Jinhui Chen -- ____ 131 Li VVang 132 Jennifer Westerhuis -- __ 133 Annie Hong __ 134 Yibing Kong 135 Corrine Sulok ---- 136 Daniel Dawson ---- __ 137 Harris Kalyvas This exam has 10 pages including this cover page. The last 3 pages include a periodic table, tables of characteristic IR absorption frequencies of common chemical bonds, and pK a values for representative acids. I 4 II 6 III 4 IV 15 V 13 VI 6 VII 8 VIII 12 IX 12 Total 80
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Chem 216, S07-E1 Name_________________________ Page 1 I . (4 points) Arrange the following compounds in order of their R f values when analyzed by thin layer chromatography on silica gel-coated plates using CH 2 Cl 2 as the developing solvent (note: no partial credit is given to this question). B A C D HO O Answer: < < < lowest R f highest R f H H H H H H H H H H H H H H H O HO O H II . (6 points) There are two types of filtration methods used in organic experiments. These are: (i) gravity filtration using a short-stemmed (glass filter) funnel and fluted filter paper and (ii) vacuum (or suction) filtration using, e.g., a Hirsch funnel and round filter paper to cover the inside bottom of
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This note was uploaded on 08/12/2008 for the course CHEM 216 taught by Professor Nolta during the Spring '07 term at University of Michigan.

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216%20S07-E1 - Chemistry 216 First Examination May 24,2007...

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