Determining Molecularity and Identifying IntermediatesIt

Chapter 6, Problem 12PE

(choose chapter or problem)

Problem 12PE

Determining Molecularity and Identifying Intermediates

It has been proposed that the conversion of ozone into O2 proceeds by a two-step mechanism:

O3(g)→O2(g) + O(g)

O3(g) + O(g)→2 O2(g)

(a) Describe the molecularity of each elementary reaction in this mechanism.

(b) Write the equation for the overall reaction.

(c) Identify the intermediate(s).

For the reaction

Mo(CO)6 + P(CH3)3→Mo(CO)5P(CH3)3 + CO

the proposed mechanism is

Mo(CO)6→Mo(CO)5 + CO

Mo(CO)5 + P(CH3)3→Mo(CO)5P(CH3)3

(a) Is the proposed mechanism consistent with the equation for the overall reaction? (b) What is the molecularity of each step of the mechanism? (c) Identify the intermediate(s).