This preview shows pages 1–2. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
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 BDEs 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...
View Full Document
- Spring '11
- Organic chemistry