2007Final 2203-7 - CHEMISTRY 2203/7 Dec. 2007 Final 1....

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CHEMISTRY 2203/7 Dec. 2007 Final 2 1 . GIVE SHORT ANSWERS TO THE FOLLOWING QUESTIONS IN THE SPACE PROVIDED (15 Marks). a. Give the three hybridization states commonly found in organic compounds. Draw three simple molecules that illustrate the geometry of each states. b. Define” reduction” with reference to organic reactions. c . Give the generalized chemical equation for the dissociation of an organic acid HA (Ka). d. What are the key differences between S N 1 and S N 2 mechanisms? (Consider kinetics and stereochemistry). e . Draw the structure of a typical carbocation in 3-d perspective. f . Assign the ( R ) or ( S ) configuration to the chiral (stereogenic) centers of the molecule shown below. g . Define what is meant by electronegativity in reference to organic compounds. h . Define the essential difference between an “aromatic” and “antiaromatic” compound? Be specific.
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CHEMISTRY 2203/7 Dec. 2007 Final 3 i . Give two reasons why organic synthesis is valuable to society. j
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2007Final 2203-7 - CHEMISTRY 2203/7 Dec. 2007 Final 1....

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