Table of contents

1. Matter and Measurements4h 31m
2. Atoms and the Periodic Table5h 23m
3. Ionic Compounds2h 18m
4. Molecular Compounds2h 18m
5. Classification & Balancing of Chemical Reactions3h 17m
6. Chemical Reactions & Quantities2h 27m
7. Energy, Rate and Equilibrium3h 46m
8. Gases, Liquids and Solids3h 25m
9. Solutions4h 10m
10. Acids and Bases3h 29m
11. Nuclear Chemistry56m
BONUS: Lab Techniques and Procedures1h 38m
BONUS: Mathematical Operations and Functions47m
12. Introduction to Organic Chemistry1h 34m
13. Alkenes, Alkynes, and Aromatic Compounds2h 12m
14. Compounds with Oxygen or Sulfur1h 6m
15. Aldehydes and Ketones1h 1m
16. Carboxylic Acids and Their Derivatives1h 11m
17. Amines39m
18. Amino Acids and Proteins1h 51m
19. Enzymes1h 37m
20. Carbohydrates1h 41m
21. The Generation of Biochemical Energy2h 8m
22. Carbohydrate Metabolism2h 22m
23. Lipids2h 26m
24. Lipid Metabolism1h 45m
25. Protein and Amino Acid Metabolism1h 37m
26. Nucleic Acids and Protein Synthesis2h 54m

13. Alkenes, Alkynes, and Aromatic Compounds

Chirality

GOB Chemistry

13. Alkenes, Alkynes, and Aromatic Compounds

Chirality

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Multiple Choice

Identify molecule(s) capable of rotating plane polarized light.

A and D

B and C

A and C

C and D

A, C, and D

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Verified step by step guidance

Identify the concept of chirality: A molecule is chiral if it has a carbon atom bonded to four different groups, making it non-superimposable on its mirror image. Such molecules can rotate plane-polarized light.

Examine molecule (a): The central carbon is bonded to a hydrogen (H), chlorine (Cl), bromine (Br), and a methyl group (CH3). These are four different groups, indicating that molecule (a) is chiral.

Examine molecule (b): The carbon in the benzene ring is bonded to two hydrogen atoms and a methyl group, which does not satisfy the condition for chirality as it does not have four different groups.

Examine molecule (c): The central carbon is bonded to a hydrogen (H), chlorine (Cl), bromine (Br), and another carbon atom. However, the presence of a second carbon atom bonded to identical groups (H and CH3) makes it achiral.

Examine molecule (d): The central carbon is bonded to a hydrogen (H), a hydroxyl group (OH), a phenyl group (C6H5), and another hydrogen atom. The presence of two identical hydrogen atoms means it is not chiral. However, if the structure is misinterpreted, ensure to verify the correct 3D arrangement for chirality.