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

Intermolecular Forces

Organic Chemistry

2. Molecular Representations

Intermolecular Forces

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Multiple Choice

PRACTICE:Which of the following pairs of molecules would have the highest boiling point?

Compound on the left

Compound on the right

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Verified step by step guidance

Identify the functional groups present in each compound. The compound on the left is ethanol, which contains a hydroxyl group (-OH), while the compound on the right is butane, which is an alkane with no functional groups.

Understand the impact of functional groups on boiling points. Hydroxyl groups can form hydrogen bonds, which are strong intermolecular forces that significantly increase the boiling point of a compound.

Compare the molecular weights of the two compounds. Ethanol (C2H5OH) has a molecular weight of approximately 46 g/mol, while butane (C4H10) has a molecular weight of approximately 58 g/mol. Although butane is heavier, the presence of hydrogen bonding in ethanol is a more significant factor in determining boiling point.

Consider the types of intermolecular forces present. Ethanol can engage in hydrogen bonding due to its -OH group, while butane can only engage in weaker van der Waals forces (dispersion forces).

Conclude that the compound on the left (ethanol) will have a higher boiling point than the compound on the right (butane) due to the presence of hydrogen bonding in ethanol.