Which reaction coordinate diagram matches the following acid/base reaction? <img src="https://media.pearsoncmg.com/ph/esm/ecs_mullins_organic1e/msa/content/practice-test/img/Ch04_Q06_QT.jpg" alt="The figure illustrates a reversible reaction. The reaction contains two reactants and two products. The first reactant is H having 1 lone pair of electrons and carrying a negative charge. The second reactant has the following structure: A 2-carbon alkane chain is depicted as a line structure using 1 line. C 1 is single bonded to O on the lower left. O is single bonded to H on the upper left. The O atom has 2 lone pairs of electrons. The first product is H 2. The second product has the following structure: A 2-carbon alkane chain is depicted as a line structure using 1 line. C 1 is single bonded to O on the lower left. O has 3 lone pairs of electrons and carries a negative charge." />

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1. A Review of General Chemistry5h 5m
2. Molecular Representations1h 14m
3. Acids and Bases2h 46m
4. Alkanes and Cycloalkanes4h 17m
5. Chirality3h 39m
6. Thermodynamics and Kinetics1h 22m
7. Substitution Reactions1h 48m
8. Elimination Reactions2h 30m
9. Alkenes and Alkynes2h 9m
10. Addition Reactions3h 19m
11. Radical Reactions1h 58m
12. Alcohols, Ethers, Epoxides and Thiols2h 42m
13. Alcohols and Carbonyl Compounds2h 17m
14. Synthetic Techniques1h 26m
15. Analytical Techniques:IR, NMR, Mass Spect7h 3m
16. Conjugated Systems6h 13m
17. Ultraviolet Spectroscopy51m
18. Aromaticity2h 34m
19. Reactions of Aromatics: EAS and Beyond5h 1m
20. Phenols55m
21. Aldehydes and Ketones: Nucleophilic Addition4h 56m
22. Carboxylic Acid Derivatives: NAS2h 51m
23. The Chemistry of Thioesters, Phophate Ester and Phosphate Anhydrides1h 10m
24. Enolate Chemistry: Reactions at the Alpha-Carbon1h 53m
25. Condensation Chemistry2h 9m
26. Amines1h 43m
27. Heterocycles2h 0m
28. Carbohydrates5h 53m
29. Amino Acids4h 20m
30. Peptides and Proteins2h 42m
31. Catalysis in Organic Reactions1h 30m
32. Lipids 2h 50m
33. The Organic Chemistry of Metabolic Pathways2h 52m
34. Nucleic Acids1h 32m
35. Transition Metals6h 14m
36. Synthetic Polymers1h 49m

6. Thermodynamics and Kinetics

Energy Diagram

Organic Chemistry

6. Thermodynamics and Kinetics

Energy Diagram

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Multiple Choice

Which reaction coordinate diagram matches the following acid/base reaction?

The figure illustrates a reaction coordinate diagram for an acid-base reaction. The horizontal axis is labeled reaction progress, indicated by a rightward arrow. The vertical axis is labeled E, indicated by an upward arrow. A curve starts at the midpoint of the vertical axis, dips slightly, rises gradually to a short, wide peak over most of the distance of the horizontal axis, falls gradually over the second half of the horizontal axis to a second dip a little above the first dip, and rises slightly.

The figure illustrates a reaction coordinate diagram for an acid-base reaction. The horizontal axis represents the reaction progress, indicated by a rightward arrow. The vertical axis represents E, indicated by an upward arrow.A curve starts close to the upper end of the vertical axis, dips slightly to a small trough, rises gradually before the first half of the distance of the horizontal axis to a peak, falls gradually over the second half of the distance of the horizontal axis to a second trough below the first trough, and rises slightly.

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Verified step by step guidance

Identify the reactants and products in the given acid/base reaction. The reactants are hydride ion (H^-) and ethanol (CH₃CH₂OH), and the products are hydrogen gas (H₂) and ethoxide ion (CH₃CH₂O^-).

Understand the nature of the reaction. This is an acid-base reaction where the hydride ion acts as a base, accepting a proton from ethanol, which acts as an acid.

Consider the energy changes involved in the reaction. The reaction involves breaking the O-H bond in ethanol and forming an H-H bond in hydrogen gas. The energy required to break the O-H bond and the energy released in forming the H-H bond will determine the overall energy profile.

Analyze the reaction coordinate diagrams provided. A reaction coordinate diagram shows the energy changes during a reaction. The diagram with a single peak represents a single transition state, while multiple peaks indicate multiple steps or transition states.

Select the reaction coordinate diagram that best matches the reaction. Since the reaction involves a single step with a single transition state, the diagram with one peak, where the energy of the products is lower than the reactants, is the most appropriate choice.