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

5. Chirality

Chirality

Organic Chemistry

5. Chirality

Chirality

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Multiple Choice

In the context of chirality, which term describes the version of a molecule that is most commonly found in nature?

Racemic mixture

Diastereomer

Enantiomer

Natural isomer

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Verified step by step guidance

Understand the concept of chirality: Chirality in organic chemistry refers to the geometric property of a molecule having a non-superimposable mirror image. This is often due to the presence of an asymmetric carbon atom, also known as a chiral center.

Identify the terms: A racemic mixture contains equal amounts of left- and right-handed enantiomers of a chiral molecule. Diastereomers are stereoisomers that are not mirror images of each other. Enantiomers are pairs of molecules that are mirror images of each other.

Recognize the term 'Natural isomer': In the context of chirality, the term 'natural isomer' refers to the specific enantiomer of a chiral molecule that is predominantly found in nature. This is often due to biological processes that favor one enantiomer over the other.

Relate to biological systems: Many biological systems are chiral and often only utilize one enantiomer of a chiral molecule. For example, most amino acids in proteins are L-enantiomers, and most sugars are D-enantiomers.

Conclude with the correct term: The term 'natural isomer' is used to describe the version of a molecule that is most commonly found in nature, as it refers to the specific enantiomer that is biologically active or prevalent.