CHEM263 Midterm: CHEM 263 UofA Chem161 Midterm 2001
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Dr. john c. vederas: structure and nomenclature - 56 points , draw structures for which names are given, or name the given structures by any correct (systematic or common) nomenclature. Be sure to give cis or trans (or if appropriate z or e) assignment to the isomer where indicated by asterisks (***). (4 points each: chloroform, allyl chloride. 8: determine whether the following pairs of structures are identical, structural isomers, or stereoisomers. (4 points each) 4: conformation, draw the newman projection showing the anti conformation of 1,2-diiodoethane. (2 pts, draw the most stable conformation of the molecule shown below. If you make an error, please redraw the template. (2 pts: for the structure below, provide the molecular formula (cxhy) and specify the number of degrees of unsaturation (4 pts) Quantitative analysis gave: c 63. 56 %; h 6. 00%; n 9. 27 %. The remainder is oxygen (given on board during exam): show how to calculate the empirical formula. (14 pts)
