Answered: Consider the following elementary steps…

Chemistry: An Atoms First Approach

2nd Edition

ISBN:9781305079243

Author:Steven S. Zumdahl, Susan A. Zumdahl

Publisher:Steven S. Zumdahl, Susan A. Zumdahl

Chapter11: Chemical Kinetics

Section: Chapter Questions

Problem 3RQ: One experimental procedure that can be used to determine the rate law of a reaction is the method of...

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Order and rate law of a reaction

The overall order of an elementary step directly corresponds to its molecularity. Both steps in this example are second order because they are each bimolecular. Furthermore, the rate law can be determined directly from the number of each type of molecule in an elementary step. For example, the rate law for step 1 is

rate=k[NO2]2rate=�[NO2]2

The exponent "2" is used because the reaction involves two NO2NO2 molecules. The rate law for step 2 is

rate=k[NO3]1[CO]1=k[NO3][CO]rate=�[NO3]1[CO]1=�[NO3][CO]

because the reaction involves only one molecule of each reactant the exponents are omitted.

Analyzing a new reaction

Consider the following elementary steps that make up the mechanism of a certain reaction:

3X→E+F3X→E+F
E+M→F+N

What is the overall reaction?

Express your answer as a chemical equation.

Part B

Which species is a reaction intermediate?

SubmitRequest Answer

Part C

What is the rate law for step 1 of this reaction?

Rate =

Part D

What is the rate law for step 2 of this reaction?

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