Chp10_rxns

Chp10_rxns - Rate Law Expressions for Elementary and...

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Rate Law Expressions for Elementary and Complex Reactions By an “elementary” reaction, we mean a chemical reaction written to imply a single concerted sequence of bond rearrangements without intermediary species. In other words, an elementary reaction is one that occurs on a molecular basis as written, with no other intervening species, as a single coordinated molecular collision event. For this file, (single arrow) will designate a “complex” reaction or one to be determined, whereas a (double arrow) will denote an elementary reaction. As our prototype reaction, consider: P bB aA + where P stands for “products.” 1. If the reaction P bB aA + is claimed or proposed to be elementary , then the reaction rate law consistent with this claim would be: b a B A k ] [ ] [ = following the rubric of “rate equals rate constant times the products of the concentrations of all reactants raised to stoichiometric coefficients as powers.” This applies only to elementary reactions. 2.
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This note was uploaded on 03/29/2009 for the course CH 201 taught by Professor Warren during the Fall '07 term at N.C. State.

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Chp10_rxns - Rate Law Expressions for Elementary and...

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