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1. Mechanism: How Energies and Kinetic Order Influence Reaction Rates

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Published on Apr 5, 2012

Freshman Organic Chemistry II (CHEM 125B)

This second semester of Freshman Organic Chemistry builds on the first semester's treatment of molecular structure and energy* to discuss how reaction mechanisms have been discovered and understood. It also treats the spectroscopy and synthesis of organic molecules. Reactions and their rates can be understood in terms of reaction-coordinate diagrams involving the passage of a set of atoms through the "transition state" on the potential-energy surface. Analysis of bond-dissociation energies suggests a chain mechanism for free-radical halogenation of alkanes. Experimental determination of kinetic order provides insight into complex reaction schemes, especially when one step is rate-limiting.

00:00 - Chapter 1. Energy and the reaction coordinate
07:31 - Chapter 2. Bond Strength and the Mechanism of Free-Radical Substitution
27:23 - Chapter 3. Complex Reactions and Kinetic Order

Complete course materials are available at the Open Yale Courses website: http://oyc.yale.edu

This course was recorded in Spring 2011.

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