Match the description to the letter of the given diagram. [The vertical scales are hard to read, so assume the same scale for all three graphs, i.e., they all go from zero to a maximum free energy of 160 kJ/mole.][And ignore the words at the upper left, including the #s.] 31. fast exothermic reaction 32. slow equilibrium reaction. 33. slow endothermic reaction. B (kJ/mole) All- A activation energy Ea Potential energy reactants (kJ) ΔΗ products reaction pathway Fast, exergonic slow, equilibrium slow, minimal energy released. Slow, endergonic 140 120 200 (kJ/mole) mole Reaction Progress 30. B None of these Not enough information A с Recar Reaction Progress C

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**Matching Reaction Descriptions to Energy Diagrams**

**Instructions:**
Match the description to the letter of the given diagram. [The vertical scales are hard to read, so assume the same scale for all three graphs, i.e., they all go from zero to a maximum free energy of 160 kJ/mole.] Ignore the words at the upper left, including the numbers.

**Descriptions:**
31. fast exothermic reaction
32. slow equilibrium reaction
33. slow endothermic reaction

**Diagrams and Descriptions:**

**Diagram A:**
This diagram shows a potential energy curve for a reaction path. The curve starts with reactants at a higher energy level, peaks at the activation energy (Ea), and then decreases to a lower energy level at the products stage, indicating an exothermic reaction (shown by ΔH). This suggests a release of energy in the form of heat (exothermic).

**Diagram B:**
The graph depicts a reaction progress with reactants starting at a lower energy level, reaching a peak at the transition state (activation energy Ea), and then only slightly decreasing energy towards the products. This represents a slow equilibrium reaction, where the difference in energy between reactants and products is minimal, resulting in a slow release of energy.

**Diagram C:**
This charts the reaction progress from reactants at a lower energy level increasing to the transition state (Ea) and finally to products at a higher energy level, indicating an increase in energy absorption, suggesting an endothermic reaction (energy is absorbed). The notable rise in energy from reactants to products aligns with a slow endothermic process.

**Matching Exercise:**

For each description, select the corresponding diagram (A, B, or C).

- 31. Fast exothermic reaction: Diagram A
- 32. Slow equilibrium reaction: Diagram B
- 33. Slow endothermic reaction: Diagram C

**Answer Section:**
(Match the given options to the correct diagrams)

- Fast, exergonic: **Diagram A**
- Slow, equilibrium: **Diagram B**
- Slow, minimal energy released: **Diagram C**
- Slow, endergonic: **Diagram C**

Ensure to use the additional dropdown options for precise matching.
Transcribed Image Text:**Matching Reaction Descriptions to Energy Diagrams** **Instructions:** Match the description to the letter of the given diagram. [The vertical scales are hard to read, so assume the same scale for all three graphs, i.e., they all go from zero to a maximum free energy of 160 kJ/mole.] Ignore the words at the upper left, including the numbers. **Descriptions:** 31. fast exothermic reaction 32. slow equilibrium reaction 33. slow endothermic reaction **Diagrams and Descriptions:** **Diagram A:** This diagram shows a potential energy curve for a reaction path. The curve starts with reactants at a higher energy level, peaks at the activation energy (Ea), and then decreases to a lower energy level at the products stage, indicating an exothermic reaction (shown by ΔH). This suggests a release of energy in the form of heat (exothermic). **Diagram B:** The graph depicts a reaction progress with reactants starting at a lower energy level, reaching a peak at the transition state (activation energy Ea), and then only slightly decreasing energy towards the products. This represents a slow equilibrium reaction, where the difference in energy between reactants and products is minimal, resulting in a slow release of energy. **Diagram C:** This charts the reaction progress from reactants at a lower energy level increasing to the transition state (Ea) and finally to products at a higher energy level, indicating an increase in energy absorption, suggesting an endothermic reaction (energy is absorbed). The notable rise in energy from reactants to products aligns with a slow endothermic process. **Matching Exercise:** For each description, select the corresponding diagram (A, B, or C). - 31. Fast exothermic reaction: Diagram A - 32. Slow equilibrium reaction: Diagram B - 33. Slow endothermic reaction: Diagram C **Answer Section:** (Match the given options to the correct diagrams) - Fast, exergonic: **Diagram A** - Slow, equilibrium: **Diagram B** - Slow, minimal energy released: **Diagram C** - Slow, endergonic: **Diagram C** Ensure to use the additional dropdown options for precise matching.
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