CHEM 111 Chapter Notes - Chapter 1: Free-Radical Reaction, Collision Theory, Reaction Mechanism
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Unit 1 - reaction kinetics: rate of reaction = speed at which a reaction occurs, a successful collision must occur for a reaction to occur (collision theory, reaction mechanisms are small steps of a specific reaction. * uncommon for 3 or more atoms/molecules to collide simultaneously. * elementary reactions = individual steps in a reaction mechanism. * slowest step is the rate determining step. * free radicals = uncharged molecules having unpaired valance electrons (free radical reaction q"s) * add all the elementary reactions to get your net/final reaction: catalyst = shows up as a reactant, then a product. It is never consumed and always regenerated: reaction intermediate = shows up as a product then consumed in a subsequent step. & never in the overall reaction: factors that affect rate of reaction. Inc of t = inc r. r (doesn"t matter whither the reaction is exo or endo both inc)
