
(a)
Interpretation: The intermediate is to be identified.
Concept Introduction: The rate is a method for determining how much something changes over a predetermined period of time. The amount of reactant or product that changes per unit of time is the
(a)

Answer to Problem 100A
The intermediate formed is
Explanation of Solution
The mechanism for the decomposition of hydrogen peroxide is given as follows:
The term "activated complex" refers to the state of the particles that are situated between reactants and products.
A temporary atomic configuration at the top of the activation energy barrier is known as an activated complex.
The intermediate formed is
(b)
Interpretation: The minimum number of activated complexes is to be described.
Concept Introduction: The rate is a method for determining how much something changes over a predetermined period of time. The amount of reactant or product that changes per unit of time is the reaction rate.
(b)

Answer to Problem 100A
The minimum number of activated complexes is two.
Explanation of Solution
The mechanism for the decomposition of hydrogen peroxide is given as follows:
In stepwise chemical processes with numerous elementary steps, an intermediate is a molecular entity that is created from the reactants (or previous intermediates) but consumed in subsequent reactions.
The minimum number of activated complexes needed to explain the reaction is two.
(c)
Interpretation: The two reactions that has the smaller specific rate constant is to be identified.
Concept Introduction: The rate is a method for determining how much something changes over a predetermined period of time. The amount of reactant or product that changes per unit of time is the reaction rate.
(c)

Answer to Problem 100A
The slow reaction will have smaller specific rate constant.
Explanation of Solution
The mechanism for the decomposition of hydrogen peroxide is given as follows:
The reaction that has the smaller specific rate constant is the reaction that takes place slowly.
The reaction with small specific rate constant is as follows:
(d)
Interpretation: The overall balanced chemical equation for the reaction is to be written.
Concept Introduction: The rate is a method for determining how much something changes over a predetermined period of time. The amount of reactant or product that changes per unit of time is the reaction rate.
(d)

Answer to Problem 100A
The overall chemical equation is as follows:
Explanation of Solution
The mechanism for the decomposition of hydrogen peroxide is given as follows:
On combining the above two equations, the overall chemical equation is written.
The overall chemical equation is as follows:
(e)
Interpretation:
Concept Introduction: The rate is a method for determining how much something changes over a predetermined period of time. The amount of reactant or product that changes per unit of time is the reaction rate.
(e)

Answer to Problem 100A
Explanation of Solution
The mechanism for the decomposition of hydrogen peroxide is given as follows:
A catalyst is a chemical that can be included in a reaction to speed up the process without being consumed.
Typically, catalysts shorten the activation energy of a process or alter its mechanism.
The catalyst can not be a reactant, product or intermediate.
Chapter 18 Solutions
Chemistry 2012 Student Edition (hard Cover) Grade 11
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