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

14. Compounds with Oxygen or Sulfur

Naming Thiols

GOB Chemistry

14. Compounds with Oxygen or Sulfur

Naming Thiols

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Problem 3b

Textbook Question

Draw the condensed structural formula, or line-angle formula if cyclic, for each of the following:
b. 3-pentanethiol

Verified step by step guidance

Step 1: Understand the name of the compound. The name '3-pentanethiol' indicates that the compound is a thiol (contains an -SH group) and has a five-carbon chain (pentane) as the parent structure. The '3-' indicates that the -SH group is attached to the third carbon in the chain.

Step 2: Draw the backbone of the molecule. Start with a straight chain of five carbon atoms (pentane). Represent this as: CH3-CH2-CH2-CH2-CH3.

Step 3: Place the -SH group on the third carbon atom. Replace one of the hydrogens on the third carbon with the -SH group. The structure now becomes: CH3-CH2-CH(SH)-CH2-CH3.

Step 4: Verify the structure. Ensure that each carbon atom has four bonds and that the -SH group is correctly placed on the third carbon.

Step 5: If needed, convert the condensed structural formula into a line-angle formula. For a line-angle formula, represent the carbon chain as a zigzag line with the -SH group attached to the third vertex. Each vertex represents a carbon atom, and hydrogens are implied unless otherwise specified.

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Key Concepts

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

Condensed Structural Formula

A condensed structural formula is a way of representing a chemical compound that shows the arrangement of atoms and the connectivity between them without depicting all the bonds explicitly. In this format, groups of atoms are often grouped together to simplify the representation, making it easier to visualize the molecular structure. For example, in 3-pentanethiol, the condensed formula would indicate the presence of a thiol (-SH) group attached to the third carbon of a five-carbon chain.

Line-Angle Formula

The line-angle formula, also known as the skeletal formula, is a shorthand representation of organic molecules where vertices represent carbon atoms and lines represent bonds. This method omits hydrogen atoms attached to carbons, making it easier to visualize larger and more complex structures. For cyclic compounds, this format is particularly useful as it clearly shows the ring structure and connectivity without cluttering the diagram with unnecessary details.

Functional Groups

Functional groups are specific groups of atoms within molecules that are responsible for the characteristic chemical reactions of those molecules. In the case of 3-pentanethiol, the functional group is the thiol group (-SH), which imparts unique properties such as odor and reactivity. Understanding functional groups is essential for predicting the behavior of organic compounds and for drawing their structural representations accurately.

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