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Identify the energy diagram(s) that illustrate a fast reaction. Select all that apply. Ea E AH Reaction coordinate Reaction coordinate Ea AH AHO Reaction coordinate Reaction coordinate Energy Energy

Identify the energy diagram(s) that illustrate a fast reaction. Select all that apply. Ea E AH Reaction coordinate Reaction coordinate Ea AH AHO Reaction coordinate Reaction coordinate Energy Energy

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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**Identify the Energy Diagrams that Illustrate a Fast Reaction** The image displays four energy diagrams, each illustrating the energy changes during a chemical reaction. The axes of each graph are labeled as follows: the vertical axis represents energy, while the horizontal axis is marked as the reaction coordinate. **Diagram Details:** 1. **Top Left:** - The energy diagram shows a bell-shaped curve. - The curve has a peak, and the activation energy (\(E_a\)) is marked from the reactants' energy level to the top of the curve. - The change in enthalpy (\(\Delta H^0\)) is also indicated. 2. **Top Right:** - Similar to the first graph, this one also displays a bell-shaped curve. - It includes markings for activation energy (\(E_a\)) and change in enthalpy (\(\Delta H^0\)). 3. **Bottom Left:** - This graph displays a lower bell-shaped curve compared to the top graphs. - The activation energy (\(E_a\)) is marked as a smaller distance from the starting point to the peak. - The change in enthalpy (\(\Delta H^0\)) is similarly depicted. 4. **Bottom Right:** - The diagram presents the lowest bell-shaped curve among all four graphs. - The activation energy (\(E_a\)) is relatively small. - The change in enthalpy (\(\Delta H^0\)) is indicated. **Explanation:** For a fast reaction, the activation energy (\(E_a\)) is typically lower because less energy is required for the reactants to reach the transition state. Therefore, the diagrams with the smallest \(E_a\) values are indicative of a faster reaction. Typically, diagrams with lower peaks correlate with faster reaction rates.
Transcribed Image Text:**Identify the Energy Diagrams that Illustrate a Fast Reaction** The image displays four energy diagrams, each illustrating the energy changes during a chemical reaction. The axes of each graph are labeled as follows: the vertical axis represents energy, while the horizontal axis is marked as the reaction coordinate. **Diagram Details:** 1. **Top Left:** - The energy diagram shows a bell-shaped curve. - The curve has a peak, and the activation energy (\(E_a\)) is marked from the reactants' energy level to the top of the curve. - The change in enthalpy (\(\Delta H^0\)) is also indicated. 2. **Top Right:** - Similar to the first graph, this one also displays a bell-shaped curve. - It includes markings for activation energy (\(E_a\)) and change in enthalpy (\(\Delta H^0\)). 3. **Bottom Left:** - This graph displays a lower bell-shaped curve compared to the top graphs. - The activation energy (\(E_a\)) is marked as a smaller distance from the starting point to the peak. - The change in enthalpy (\(\Delta H^0\)) is similarly depicted. 4. **Bottom Right:** - The diagram presents the lowest bell-shaped curve among all four graphs. - The activation energy (\(E_a\)) is relatively small. - The change in enthalpy (\(\Delta H^0\)) is indicated. **Explanation:** For a fast reaction, the activation energy (\(E_a\)) is typically lower because less energy is required for the reactants to reach the transition state. Therefore, the diagrams with the smallest \(E_a\) values are indicative of a faster reaction. Typically, diagrams with lower peaks correlate with faster reaction rates.
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