On the energy diagram below, which arrows represent the activation energy?
Biology 2e
2nd Edition
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark
Chapter6: Metabolism
Section: Chapter Questions
Problem 1VCQ: Figure 6.8 Look at each of the processes shown, and decide if it is endergonic or exergonic. In each...
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![### Analyzing Activation Energy in Chemical Reactions
**Question:**
On the energy diagram below, which arrows represent the activation energy?
**Diagram Description:**
The energy diagram plots the reaction coordinate (x-axis) against energy (y-axis), illustrating the energy changes during a chemical reaction. It starts with the reactants at a certain energy level, which then rise to a peak (representing the transition state) before descending to the energy level of the products. Three arrows are depicted in the diagram:
- Arrow 1: Extends from the reactants' energy level to the peak of the transition state.
- Arrow 2: Extends from the products' energy level to the peak of the transition state.
- Arrow 3: Extends from the products' energy level to the reactants' energy level.
**Options:**
A. Arrow 1 is the activation energy for both the forward and reverse reactions.
B. Arrow 1 is the activation energy for the forward reaction and arrow 2 is the activation energy for the reverse reaction.
C. Arrow 1 is the activation energy for the forward reaction and arrow 3 is the activation energy for the reverse reaction.
D. Arrow 3 is the activation for the forward reaction and arrow 2 is the activation energy for the reverse reaction.
**Answer:**
**B. Arrow 1 is the activation energy for the forward reaction and arrow 2 is the activation energy for the reverse reaction.**
### Explanation of Terms:
**Activation Energy:**
- The minimum amount of energy required to initiate a chemical reaction.
- For the **forward reaction**, it is the energy needed to go from reactants to the transition state (represented by Arrow 1).
- For the **reverse reaction**, it is the energy needed to go from products to the transition state (represented by Arrow 2).
Understanding these concepts is essential for mastering reaction kinetics and thermodynamics in chemistry.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F641a0b46-5952-4dd9-a005-eccc0977a773%2Fca733f65-7d9c-4515-968f-f84b82cd57b9%2Fis2hjb_processed.png&w=3840&q=75)
Transcribed Image Text:### Analyzing Activation Energy in Chemical Reactions
**Question:**
On the energy diagram below, which arrows represent the activation energy?
**Diagram Description:**
The energy diagram plots the reaction coordinate (x-axis) against energy (y-axis), illustrating the energy changes during a chemical reaction. It starts with the reactants at a certain energy level, which then rise to a peak (representing the transition state) before descending to the energy level of the products. Three arrows are depicted in the diagram:
- Arrow 1: Extends from the reactants' energy level to the peak of the transition state.
- Arrow 2: Extends from the products' energy level to the peak of the transition state.
- Arrow 3: Extends from the products' energy level to the reactants' energy level.
**Options:**
A. Arrow 1 is the activation energy for both the forward and reverse reactions.
B. Arrow 1 is the activation energy for the forward reaction and arrow 2 is the activation energy for the reverse reaction.
C. Arrow 1 is the activation energy for the forward reaction and arrow 3 is the activation energy for the reverse reaction.
D. Arrow 3 is the activation for the forward reaction and arrow 2 is the activation energy for the reverse reaction.
**Answer:**
**B. Arrow 1 is the activation energy for the forward reaction and arrow 2 is the activation energy for the reverse reaction.**
### Explanation of Terms:
**Activation Energy:**
- The minimum amount of energy required to initiate a chemical reaction.
- For the **forward reaction**, it is the energy needed to go from reactants to the transition state (represented by Arrow 1).
- For the **reverse reaction**, it is the energy needed to go from products to the transition state (represented by Arrow 2).
Understanding these concepts is essential for mastering reaction kinetics and thermodynamics in chemistry.
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