CHEM 1214 Lecture : Chapter 15
5 Feb 2014
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Rate law expression has the form: rate = k [no]m [o2]n and the value of k all from a single experiment in which the change in the concentration of reactant x is determined at various times: then, plot [x] v. t; if straight, reaction is zero order, plot ln [x] v. t; if straight, reaction is 1st order, plot 1/ [x] v. t; if straight, reaction is 2nd order. Lecture 9 (1/28/13: pseudo first order reactions, all reactants but one are present at such high concentrations that they do not change significantly during the course of reaction, reaction rate is determined by the concentration of the limiting reactant, factors affecting reaction rate, concentration of reactants: Rate law based on molecularity of rate determining step must be consistent with rate law derived from experimental data. (cid:246) (cid:231) (cid:230: heterogeneous catalysts, catalytic converter.
