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Use the energy diagram for the reaction A⟶D to answer the questions. How many transition states are there in the reaction? transition states:   How many intermediates are there in the reaction?   intermediates:   Which step of the reaction is the fastest?   Which step of the reaction has the smallest rate constant? Assume the frequency factor (?) is the same for each elementary reaction.   Is the overall reaction exothermic or endothermic?

Use the energy diagram for the reaction A⟶D to answer the questions. How many transition states are there in the reaction? transition states:   How many intermediates are there in the reaction?   intermediates:   Which step of the reaction is the fastest?   Which step of the reaction has the smallest rate constant? Assume the frequency factor (?) is the same for each elementary reaction.   Is the overall reaction exothermic or endothermic?

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Use the energy diagram for the reaction A⟶D to answer the questions.

How many transition states are there in the reaction?

transition states:
 
How many intermediates are there in the reaction?
 
intermediates:
 
Which step of the reaction is the fastest?
 
Which step of the reaction has the smallest rate constant? Assume the frequency factor (?) is the same for each elementary reaction.
 
Is the overall reaction exothermic or endothermic?
 
A.cannot determine from the diagram
B. exothermic
C. endothermic
 
**Transcription for Educational Website** **Reaction Energy Profile Diagram** This diagram represents the potential energy changes during the course of a chemical reaction. It is plotted with "Potential Energy" on the Y-axis and "Reaction Progress" on the X-axis. **Key Points of the Diagram:** - **Point A**: Represents the energy level of reactants at the start of the reaction. - **Point B**: The first peak, indicating the first transition state with a higher energy barrier that must be overcome for the reaction to proceed. - **Point C**: The second peak, representing a second transition state that also has an energy barrier. This peak is higher than the first, suggesting a more significant energy requirement. - **Point D**: Corresponds to the energy level of the products. It is lower than both transition states and the reactants, indicating an exothermic reaction where energy is released. The curve illustrates that as the reaction progresses, it must overcome energy barriers (transition states) before reaching a stable energy state at the products' level. The overall decrease in potential energy from reactants to products signifies energy release in this chemical reaction.
Transcribed Image Text:**Transcription for Educational Website** **Reaction Energy Profile Diagram** This diagram represents the potential energy changes during the course of a chemical reaction. It is plotted with "Potential Energy" on the Y-axis and "Reaction Progress" on the X-axis. **Key Points of the Diagram:** - **Point A**: Represents the energy level of reactants at the start of the reaction. - **Point B**: The first peak, indicating the first transition state with a higher energy barrier that must be overcome for the reaction to proceed. - **Point C**: The second peak, representing a second transition state that also has an energy barrier. This peak is higher than the first, suggesting a more significant energy requirement. - **Point D**: Corresponds to the energy level of the products. It is lower than both transition states and the reactants, indicating an exothermic reaction where energy is released. The curve illustrates that as the reaction progresses, it must overcome energy barriers (transition states) before reaching a stable energy state at the products' level. The overall decrease in potential energy from reactants to products signifies energy release in this chemical reaction.
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