
Concept explainers
(a)
Interpretation: The order of the reaction with respect to
Concept Introduction: The rate law for a reaction is represented as follows:
According to above expression, the reaction is x order with respect to A and y order with respect to B and k is rate constant.
(a)

Answer to Problem 135CP
The order of the reaction with respect to both
Explanation of Solution
The given reaction is as follows:
The initial concentration of
The rate law for the above reaction is represented as follows:
The given concentration of
Also, the plot between ln
The rate law can be rewritten as follows:
Here,
This K is the slope value for plot between ln
Taking the ratio of slope from experiment 2 and 3:
Thus, value of m is 1.
Therefore, the order of reaction is 1 with respect to both
(b)
Interpretation: The order of the reaction with respect to
Concept Introduction: The rate law for a reaction is represented as follows:
According to above expression, the reaction is x order with respect to A and y order with respect to B and k is rate constant.
(b)

Answer to Problem 135CP
The value of
Explanation of Solution
The slope is represented as follows:
Here, value of m is equal to 1 thus,
Now, from experiment 1 and 4:
Or,
Or,
Also,
Putting the value from equation (1),
Putting the calculated value in equation (1),
Thus, the value of
(c)
Interpretation: The reason for the two-term dependence of the rate on hydrogen ion concentration needs to be explained.
Concept Introduction: The rate law for a reaction is represented as follows:
According to above expression, the reaction is x order with respect to A and y order with respect to B and k is rate constant.
(c)

Explanation of Solution
There are two possible pathways, one involving hydrogen ion and the rate law is represented as follows:
The other pathway is which do not involve hydrogen ion.
The overall rate depends on the pathway that dominates and this depends on the concentration of hydrogen ion in the solution.
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Chapter 15 Solutions
Chemical Principles
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