Chem 2 chapter 12 - CHEM 1451 - Sample Kinetics Questions...

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1 CHEM 1451 - Sample Kinetics Questions Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. The following 2 questions relate to the reaction between water and a complex ion of Co 2+ ; the rate varies with concentration as follows. (The rate has no dependence (i.e. zero order) on [H 2 O].) Trial [Co 2+ complex], M Initial rate, M min -1 1 1.14 x 10 -3 3.2 x 10 -7 2 2.28 x 10 -3 6.4 x 10 -7 3 3.42 x 10 -3 9.6 x 10 -7 4 1.14 x 10 -2 3.2 x 10 -6 ____ 1. Referto the information above. The rate law for the reaction is R = a. k ( 1 / [Co 2+ complex]) b. k [Co 2+ complex] c. k [Co 2+ complex] 3 d. k [Co 2+ complex] ½ e. k[Co 2+ complex] 2 ____ 2. For the reaction indicated in #1, which of the following plots would have yielded the best straight line? a. [Co 2+ complex] vs time d. ln [Co 2+ complex] vs time b. [Co 2+ complex] 2 vs time e. Rate vs time c. 1 / [Co 2+ complex] vs time ____ 3. Which statement is true about a catalyst? a. It increases the activation energy involved in a reaction. b. It must be the same phase as the reactants (homogeneous). c. It is produced during an early step in the reaction and used up in a later step. d.
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This note was uploaded on 04/10/2008 for the course CHEM 1451 taught by Professor Krause during the Spring '08 term at University of Central Arkansas.

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Chem 2 chapter 12 - CHEM 1451 - Sample Kinetics Questions...

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