Q1: For the following energy diagrams, identify the reaction as endothermic or exothermic, and determine AEan and Ea. 21 E4 Reaction coordinate

Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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**Q1:** For the following energy diagrams, identify the reaction as endothermic or exothermic, and determine ΔH_rxn and E_a.

*Diagram Explanation:*
The graph shows the potential energy (y-axis) against the reaction coordinate (x-axis). There's a curve representing the progress of a chemical reaction:

- The initial portion of the curve starts at a lower energy level, representing the reactants.
- The curve then rises to a peak, indicating the activation energy (E_a), which is the energy required to initiate the reaction.
- After the peak, the curve descends to a final energy level representing the products. This energy is higher than the starting level, indicating that the reaction absorbs energy.

The difference in energy between the reactants and products is labeled as ΔH_rxn, indicating an endothermic reaction.

**Q2:** Sketch and label energy diagrams for each reaction described below:

- **Reaction A**, which occurs quickly and is endothermic
- **Reaction B**, which occurs slowly and is endothermic

*Diagram Instructions:*
- **A:** For Reaction A, the energy diagram should have a smaller activation energy barrier to reflect a quicker reaction, with the products at a higher energy level than the reactants.
  
- **B:** For Reaction B, the energy diagram should display a larger activation energy barrier, representing a slower reaction, with the products also at a higher energy level than the reactants.
Transcribed Image Text:**Q1:** For the following energy diagrams, identify the reaction as endothermic or exothermic, and determine ΔH_rxn and E_a. *Diagram Explanation:* The graph shows the potential energy (y-axis) against the reaction coordinate (x-axis). There's a curve representing the progress of a chemical reaction: - The initial portion of the curve starts at a lower energy level, representing the reactants. - The curve then rises to a peak, indicating the activation energy (E_a), which is the energy required to initiate the reaction. - After the peak, the curve descends to a final energy level representing the products. This energy is higher than the starting level, indicating that the reaction absorbs energy. The difference in energy between the reactants and products is labeled as ΔH_rxn, indicating an endothermic reaction. **Q2:** Sketch and label energy diagrams for each reaction described below: - **Reaction A**, which occurs quickly and is endothermic - **Reaction B**, which occurs slowly and is endothermic *Diagram Instructions:* - **A:** For Reaction A, the energy diagram should have a smaller activation energy barrier to reflect a quicker reaction, with the products at a higher energy level than the reactants. - **B:** For Reaction B, the energy diagram should display a larger activation energy barrier, representing a slower reaction, with the products also at a higher energy level than the reactants.
**Exit Ticket Ch 13 Part 3 Reaction Rate 11122020**

*Please print out this exit ticket or write down your answers on a sheet of paper, scan and submit it to the corresponding folder on Assignment on Canvas.*

**Question:** You have learned the cellular respiration. Suppose you want to increase the rate of this reaction. Suggest one method to make this reaction go faster and explain if the method of your choice will change the activation energy of the reaction.

\[ \text{C}_6\text{H}_{12}\text{O}_6 + 6\text{O}_2 \rightarrow 6\text{CO}_2 + 6\text{H}_2\text{O} \]

---

This chemical equation represents cellular respiration, where glucose (\(\text{C}_6\text{H}_{12}\text{O}_6\)) reacts with oxygen (\(\text{O}_2\)) to produce carbon dioxide (\(\text{CO}_2\)) and water (\(\text{H}_2\text{O}\)).
Transcribed Image Text:**Exit Ticket Ch 13 Part 3 Reaction Rate 11122020** *Please print out this exit ticket or write down your answers on a sheet of paper, scan and submit it to the corresponding folder on Assignment on Canvas.* **Question:** You have learned the cellular respiration. Suppose you want to increase the rate of this reaction. Suggest one method to make this reaction go faster and explain if the method of your choice will change the activation energy of the reaction. \[ \text{C}_6\text{H}_{12}\text{O}_6 + 6\text{O}_2 \rightarrow 6\text{CO}_2 + 6\text{H}_2\text{O} \] --- This chemical equation represents cellular respiration, where glucose (\(\text{C}_6\text{H}_{12}\text{O}_6\)) reacts with oxygen (\(\text{O}_2\)) to produce carbon dioxide (\(\text{CO}_2\)) and water (\(\text{H}_2\text{O}\)).
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