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

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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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