Kinetics Review Problems

Kinetics Review Problems - E Mechanism B 2E 2X Balance the...

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Kinetics Review Problems Chem 111 Fall 2005 The following initial rates were measured for a reaction that takes place at 298K. 3A + B + 2C D + 5E Exp # [A] 0 (M) [B] 0 [C] 0 r 0 (M/s) 1 1.0 2.0 1.0 0.68 2 2.0 2.0 1.0 1.36 3 1.0 1.0 1.0 0.68 4 1.0 2.0 0.25 0.34 What is the general rate law? What are the units of k? The following reaction obeys the rate law r = 0.5M -1 s -1 [A] 2 . It is performed at 298K. A + 2B C A solution with A at 0.5M and B at 2.0M and no C initially undergoes a reaction. What is the concentration of C after 30 seconds? It is found that raising the temperature by 10K doubles the concentration of C at t = 30s in the above reaction. What is the activation energy of the reaction?
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The reaction is proposed to follow the below mechanism. 3B + 4C 2X Reaction ------------------------- B + C  D C + D
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Unformatted text preview: E Mechanism B + 2E 2X Balance the mechanism to show that it corresponds to the observed reaction. Find the rate law that this mechanism predicts. Draw the energy diagram for I) A fast single step reaction. II) A two step reaction with a rate limiting step. III) The energy diagram for part II if a catalyst is added that affects the rate limiting step. Be able to… Write rate laws and determine the units for k Determine the rate laws from graphs and initial rate data Calculate concentration / pressures as a function of time using integrated rate laws Draw energy diagrams—AE, AC, #steps, effects of catalysts Arrhenius—find AE and rate constant for different temperatures Balance and determine rate laws from mechanisms...
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This note was uploaded on 02/08/2010 for the course CHEM 111 taught by Professor Kenney during the Spring '08 term at Case Western.

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Kinetics Review Problems - E Mechanism B 2E 2X Balance the...

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