Lec 11 - Question from Last Time! The unimolecular...

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1 1 Question from Last Time! The unimolecular decomposition of ozone, O 3 , displays first-order kinetics, which means that a plot of _________ vs time is linear, and the slope of the line equals ________, where k is the rate constant. A) [O 3 ] –k B) [O 3 ] +k C) [O 3 ] –1 –k D) [O 3 ] –1 +k E) ln([O 3 ]) –k 0 11 [] t kt A A  ) ln([A] k t - ) ln([A] [A] k t - [A] 0 t 0 t 2 Rate Law for a Reaction A rate law describes how the rate of a reaction is affected by the concentrations of the reactants. More reactants per liter, more collisions per second, more reaction per second. Form of the rate law depends on the reaction mechanism. Note: you can determine k using the rate law! Rate = k [NO] 2 [O 3 ]
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2 3 Temperature Dependence of the Rate Constant You have seen 2 ways to determine k. So we measure k at several temperatures. 1) Using initial rate data. 2) Using concentration vs time data. 4 Here are the results. This is a _____ A) small effect. B) big effect. C) really big effect!
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3 5 The function k(T) vs T is plotted in this graph. This graph shows _____ A) a linear function.
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This note was uploaded on 06/20/2011 for the course CHEM 132 taught by Professor Laceyandhanson during the Spring '08 term at SUNY Stony Brook.

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Lec 11 - Question from Last Time! The unimolecular...

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