Chemical_Kinetics_exercise

Chemical_Kinetics_exercise - Chem 1332 (Guloy) Chapter 13:...

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Chem 1332 (Guloy Model: Kinetics of a Unimolecular Reaction Under certain conditions ozone in the atmosphere decomposes by dissociation (O 3 --> O 2 + O) with the kinetics given below. The data in the graph and table are described by the following equations. Note the curved line refers to the left scale, and the straight line refers to the right scale. reaction rate = - [O 3 ]/ t rate law: Rate = [O 3 ]/ t = - k [O 3 ] integrated rate law: ln([O 3 ]/[O 3 ] o ) = - k t Ozone Decomposition 0 10 20 30 40 50 60 70 80 90 100 0 1000 2000 3000 4000 5000 6000 7000 time in seconds [O 3 ] concentration in micromoles/liter -4.40 -4.00 -3.60 -3.20 -2.80 -2.40 -2.00 -1.60 -1.20 -0.80 -0.40 0.00 Ln([O ]/initial [O }) Data on Ozone Decomposition (half-life time = 1270 s) Time (s) 0 100 900 1000 6900 7000 concentration (10 -6 M) 89.63 84.87 54.84 51.92 2.07 1.96 ln([O 3 ]/[O 3 ] o ) 0.000 -0.0546 -0.4914 -0.5460 -3.767 -3.822
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Chemical Kinetics Key Questions 1. In the model, how long does it take for half the ozone to decompose, and what is
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This note was uploaded on 07/20/2011 for the course CHEM 14BL taught by Professor Pang during the Summer '07 term at UCLA.

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Chemical_Kinetics_exercise - Chem 1332 (Guloy) Chapter 13:...

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