Table of contents

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

3. Acids and Bases

Equilibrium Constant

Organic Chemistry

3. Acids and Bases

Equilibrium Constant

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Multiple Choice

If a given acid/base reaction has a K_eq = 10²⁵, what does this mean about the stability of the molecules?

The products are much more stable/contain the weaker acid.

The reactants are much more stable/contain the weaker acid.

The acid/base reaction is in equilibrium, with neither side more favored than the other.

It depends on the structure of the acid/conjugate acid.

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Verified step by step guidance

Understand the concept of equilibrium constant (Keq): In an acid/base reaction, the equilibrium constant (Keq) is a measure of the extent to which reactants are converted to products. A large Keq value indicates that the reaction strongly favors the formation of products.

Interpret the given Keq value: A Keq value of 1025 is significantly greater than 1, suggesting that the equilibrium lies far to the right, favoring the formation of products over reactants.

Relate Keq to stability: In acid/base reactions, the side of the reaction with the weaker acid and base is typically more stable. Since the Keq is large, the products are more stable, indicating they contain the weaker acid.

Consider the implications for acid strength: The weaker acid in the products means that the conjugate base of the original acid is stronger, which contributes to the stability of the products.

Conclude based on the Keq value: Given the large Keq, the products are much more stable than the reactants, and the reaction strongly favors the formation of products containing the weaker acid.