Fall_2009_105b_Practice_Exam_1_key

Fall_2009_105b_Practice_Exam_1_key - Practice exam #1 with...

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1 1. (12 pt) Fill in the blanks in the following sentences. a. For a rate mechanism to be appropriate, the rate law from the _________________________________ must match the experimentally determined rate law. b. The molecularity of the following elementary step is ___________________________________: 2 A (g) Æ B (g) + 2 C (g) c. The ________________________________________ is the minimum amount of energy that must be overcome to produce a chemical reaction. d. A(n) _________________________________ catalyst is in the same state as the reactants. e. A(n) ________________________________________ is produced in one elementary step and consumed in a subsequent step. f. In order for molecules to react they must overcome some minimum amount of energy as we as have the correct ________________________________________ with respect to each other.
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2 2. (9 pt) Consider the following data concerning the equation: H 2 O 2 + 3 I - + 2 H + Æ I 3 - + 2 H 2 O Experiment [H 2 O 2 ] [I - ] [H + ] rate 1 0.100 M 5.00 x 10 -4 M 1.00 x 10 -2 M 0.137 M/s 2 0.100 M 1.00 x 10
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Fall_2009_105b_Practice_Exam_1_key - Practice exam #1 with...

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