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Unformatted text preview: Exam 1: Practice Questions 1) Write a balanced equation for the combustion of methylcyclononane. Show how you would calculate the heat generated in this combustion process. (Please refer to the table of BDE’s supplied.) You do not need to crunch the numbers, but you must show explicitly how you would do the calculation. 2) Sketch an approximate potential energy diagram for rotation about the C2-C3 carbon bond in 2- methylbutane. Draw Newman projections of 2-methylbutane at all energy minima and maxima. Identify any relevant interactions. 3) Rank the following molecules from highest pK a to lowest pK a . Justify your order. 4) Shown below are the structures for Ephedrine and cholesterol. For the stereocenter indicated, designate R or S configuration. Show how you arrived at this designation, clearly indicating your priority assignment. 5) Identify the more stable stereoisomer in each of the following pairs, and give the reason for your choice: a) cis- or trans-1-Isopropyl-2-methylcyclohexane...
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This note was uploaded on 07/02/2011 for the course CHEM S341 taught by Professor Staff during the Spring '11 term at Indiana.
- Spring '11
- Organic chemistry