Reading Guide 6-2 6-6 11-3 11-4 PDF

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Sections 6.2-6.6, 11.3-11.4 Chapter 11 Skills (Learning Objectives on Blackboard): 5,6 End-of-Chapter Problems: Chap 6 – 21-28; Chap 11 – 27, 43, 49 Sections 6.2-6.6 review important concepts from CHEM 102. Pay particular attention to section 6.6. The Hammond Postulate is probably a new concept but it is one that we will use multiple times during the semester to understand the selectivity of reactions (often more than one product will be possible and the relative amount of the major product and the minor product is referred to as the selectivity of the reaction). Sections 11.3 and 11.4 describe our first reaction – free radical halogenation. Superficially, this is a substitution reaction in which a hydrogen is replaced by (substituted with) a halogen. The mechanism is illustrated for the chlorination of methane on page 500 (mechanism 11.1). This mechanism can be generalized to include halogens other than chlorine and alkanes other than methane. The propagation steps are the most important parts of the mechanism. Note that the first propagation step is the rate limiting step – why? We will focus most of our attention on this rate-limiting first propagation step as we consider how the halogen and the alkane affect the reaction. The following videos are relevant for these sections: Video Mini-Lecture: Energy Diagrams in Organic Reaction Chemistry (6:55) – pairs with sections 6.5, 6.6 View for Review (Read, Study, and Practice on WileyPLUS) Video Mini-Lecture: Drawing the Mechanisms for Radical Reactions (6:55) – pairs with section 11.3 Recommended Viewing (Read, Study, and Practice on WileyPLUS) Free Radical Reactions (13:55) – pairs with section 11.3 Recommended Viewing (Khan Academy, link on Blackboard)...