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

Acids and Bases

Organic Chemistry

3. Acids and Bases

Acids and Bases

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Multiple Choice

Which statement regarding the acidity of carboxylic acids is true?

Carboxylic acids are stronger acids than phenols.

Carboxylic acids are weaker acids than alcohols.

Carboxylic acids have a higher pKa than amines.

Carboxylic acids do not dissociate in water.

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Verified step by step guidance

Understand the concept of acidity: Acidity in organic chemistry is often measured by the pKa value, where a lower pKa indicates a stronger acid.

Compare carboxylic acids and phenols: Carboxylic acids generally have lower pKa values than phenols, indicating that they are stronger acids. This is due to the resonance stabilization of the carboxylate ion formed after deprotonation.

Compare carboxylic acids and alcohols: Carboxylic acids are stronger acids than alcohols. Alcohols have higher pKa values, meaning they are weaker acids compared to carboxylic acids.

Compare carboxylic acids and amines: Carboxylic acids have lower pKa values than amines, making them stronger acids. Amines are basic and have much higher pKa values.

Consider dissociation in water: Carboxylic acids do dissociate in water to form carboxylate ions and hydronium ions, which is a characteristic of their acidic nature.