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

12. Introduction to Organic Chemistry

Naming Cyclic Alkanes

GOB Chemistry

12. Introduction to Organic Chemistry

Naming Cyclic Alkanes

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3:03 minutes

Problem 49a

Textbook Question

Give the structure and name of the cycloalkanes described.
(a) A compound whose molecular formula is C₆H₁₂ and contains a five-membered ring

Verified step by step guidance

Step 1: Understand the molecular formula C₆H₁₂. This indicates the compound is a cycloalkane, as it follows the general formula for cycloalkanes, CₙH₂ₙ.

Step 2: Recognize that the problem specifies a five-membered ring. Cycloalkanes are named based on the number of carbon atoms in the ring structure. A five-membered ring corresponds to cyclopentane.

Step 3: Draw the structure of cyclopentane. Represent a pentagon to indicate the five-membered ring, with each vertex representing a carbon atom. Add two hydrogen atoms to each carbon to satisfy the molecular formula C₆H₁₂.

Step 4: Verify the molecular formula by counting the total number of carbon and hydrogen atoms in the structure. Ensure there are 6 carbons and 12 hydrogens.

Step 5: Name the compound. Since it is a five-membered ring with no substituents, the name is simply 'cyclopentane'.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Cycloalkanes

Cycloalkanes are a class of hydrocarbons that contain carbon atoms arranged in a ring structure. They are saturated compounds, meaning they have single bonds between carbon atoms and follow the general formula CnH2n, where n is the number of carbon atoms. Cycloalkanes can vary in size and complexity, with common examples including cyclopropane, cyclobutane, and cyclohexane.

Molecular Formula

A molecular formula represents the number and types of atoms in a molecule. For cycloalkanes, the molecular formula can help identify the number of carbon and hydrogen atoms present. In the case of C₆H₁₂, the formula indicates six carbon atoms and twelve hydrogen atoms, which is characteristic of a cycloalkane with a ring structure.

Five-Membered Ring

A five-membered ring in organic chemistry refers to a cyclic structure composed of five carbon atoms. This specific arrangement can lead to various isomers and derivatives, such as cyclopentane or methylcyclobutane. The presence of a five-membered ring in a compound with the formula C₆H₁₂ suggests that there may be additional substituents or branching in the structure, influencing its chemical properties.