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25 20 15 10 B A Reaction progress Use the reaction energy diagram above to answer the following questions. Calculate the activation energy, AG* , for the step B to C. | ]kcalmol Calculate the overall energy change, AG°, for the process A to B. kcal/mol Which step is faster, (a) C to B or (b) B to A? ( Free Energy (kcal/mol)

25 20 15 10 B A Reaction progress Use the reaction energy diagram above to answer the following questions. Calculate the activation energy, AG* , for the step B to C. | ]kcalmol Calculate the overall energy change, AG°, for the process A to B. kcal/mol Which step is faster, (a) C to B or (b) B to A? ( Free Energy (kcal/mol)

Chemistry
Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Use the reaction energy diagram above to answer the following questions.

### Reaction Energy Diagram Analysis **Reaction Energy Diagram** The provided diagram represents the change in free energy (measured in kcal/mol) as a reaction progresses from the reactants to the products. The x-axis denotes the progression of the reaction, while the y-axis represents the free energy of the system. **Key Points on the Diagram:** - **Point A:** Initial state of the reactants. - **Point B:** Intermediate state of the reaction. - **Point C:** Final state of the products. **Graph Analysis:** - The initial free energy starts at a certain value at Point A. - The energy rises to a peak, indicating an activation barrier, before reaching Point B. - From Point B, the energy again rises to a higher peak before finally dropping to Point C, the endpoint of the reaction. ### Questions 1. **Calculate the Activation Energy, \( \Delta G^{‡} \), for the step B to C:** 2. **Calculate the Overall Energy Change, \( \Delta G^\circ \), for the process A to B:** 3. **Which step is faster, (a) C to B or (b) B to A?** ### Calculation Inputs - **Activation Energy Calculation:** The activation energy \( \Delta G^{‡} \) represents the energy difference between the intermediate B and the peak leading to C. - **Overall Energy Change:** The overall energy change \( \Delta G^\circ \) for the process from A to B can be deduced by comparing the energy levels at points A and B. - **Rate Comparison:** Considering the energy barriers, determine which step has a lower activation energy to ascertain which is faster. ### User Input Fields - **Activation Energy, \( \Delta G^{‡} \), for B to C:** ``` ______ kcal/mol ``` - **Overall Energy Change, \( \Delta G^\circ \), for A to B:** ``` ______ kcal/mol ``` - **Select Faster Step:** ``` ( ) C to B ( ) B to A ``` Ensure accurate calculations based on the diagram values and complete the analysis accordingly.
Transcribed Image Text:### Reaction Energy Diagram Analysis **Reaction Energy Diagram** The provided diagram represents the change in free energy (measured in kcal/mol) as a reaction progresses from the reactants to the products. The x-axis denotes the progression of the reaction, while the y-axis represents the free energy of the system. **Key Points on the Diagram:** - **Point A:** Initial state of the reactants. - **Point B:** Intermediate state of the reaction. - **Point C:** Final state of the products. **Graph Analysis:** - The initial free energy starts at a certain value at Point A. - The energy rises to a peak, indicating an activation barrier, before reaching Point B. - From Point B, the energy again rises to a higher peak before finally dropping to Point C, the endpoint of the reaction. ### Questions 1. **Calculate the Activation Energy, \( \Delta G^{‡} \), for the step B to C:** 2. **Calculate the Overall Energy Change, \( \Delta G^\circ \), for the process A to B:** 3. **Which step is faster, (a) C to B or (b) B to A?** ### Calculation Inputs - **Activation Energy Calculation:** The activation energy \( \Delta G^{‡} \) represents the energy difference between the intermediate B and the peak leading to C. - **Overall Energy Change:** The overall energy change \( \Delta G^\circ \) for the process from A to B can be deduced by comparing the energy levels at points A and B. - **Rate Comparison:** Considering the energy barriers, determine which step has a lower activation energy to ascertain which is faster. ### User Input Fields - **Activation Energy, \( \Delta G^{‡} \), for B to C:** ``` ______ kcal/mol ``` - **Overall Energy Change, \( \Delta G^\circ \), for A to B:** ``` ______ kcal/mol ``` - **Select Faster Step:** ``` ( ) C to B ( ) B to A ``` Ensure accurate calculations based on the diagram values and complete the analysis accordingly.
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