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

2. Molecular Representations

Functional Groups

Organic Chemistry

2. Molecular Representations

Functional Groups

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Multiple Choice

Which of the following functional groups is present in all vitamins classified as water-soluble?

Carboxyl group (-COOH)

Hydroxyl group (-OH)

Hydrophilic group

Amine group (-NH2)

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Verified step by step guidance

Identify the functional groups listed in the problem: Carboxyl group (-COOH), Hydroxyl group (-OH), Hydrophilic group, and Amine group (-NH2).

Understand the properties of water-soluble vitamins: Water-soluble vitamins are those that dissolve in water and are easily absorbed by the body. They often contain polar or charged groups that enhance their solubility in water.

Examine the characteristics of each functional group: The Carboxyl group (-COOH) is polar and can form hydrogen bonds, the Hydroxyl group (-OH) is also polar and can form hydrogen bonds, the Hydrophilic group refers to any group that increases solubility in water, and the Amine group (-NH2) is polar and can form hydrogen bonds.

Consider which functional group is common in water-soluble vitamins: Water-soluble vitamins often contain groups that are polar or charged, enhancing their solubility in water. The term 'Hydrophilic group' encompasses any group that increases water solubility, including polar groups like hydroxyl and amine.

Conclude that the term 'Hydrophilic group' is a general descriptor for groups that increase water solubility, which is a characteristic of water-soluble vitamins. Therefore, the presence of hydrophilic groups is essential for the classification of vitamins as water-soluble.