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

16. Carboxylic Acids and Their Derivatives

Naming Carboxylic Acids

GOB Chemistry

16. Carboxylic Acids and Their Derivatives

Naming Carboxylic Acids

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2:23 minutes

Problem 6c

Textbook Question

Draw the condensed structural formulas for a and b and line-angle formulas for c and d:
c. 3-ethylbenzoic acid

Verified step by step guidance

Step 1: Understand the problem. You are tasked with drawing the condensed structural formula and line-angle formula for 3-ethylbenzoic acid. This compound consists of a benzene ring with a carboxylic acid (-COOH) group and an ethyl group (-CH₂CH₃) attached to specific positions on the ring.

Step 2: Identify the structure of benzoic acid. Benzoic acid is a benzene ring with a carboxylic acid (-COOH) group attached to one of its carbons. The carboxylic acid group is typically assigned position 1 on the ring.

Step 3: Determine the position of the ethyl group. The name '3-ethylbenzoic acid' indicates that the ethyl group (-CH₂CH₃) is attached to the third carbon of the benzene ring, relative to the carboxylic acid group at position 1.

Step 4: Draw the condensed structural formula. Start with the benzene ring, then add the carboxylic acid group (-COOH) at position 1 and the ethyl group (-CH₂CH₃) at position 3. The condensed structural formula will represent the connectivity of atoms in a compact form.

Step 5: Draw the line-angle formula. Represent the benzene ring as a hexagon with alternating double bonds. Attach the carboxylic acid group (-COOH) at position 1 and the ethyl group (-CH₂CH₃) at position 3 using lines to indicate bonds. Ensure the positions are clear and accurate.

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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. It typically groups atoms together to indicate how they are connected, making it easier to visualize the structure of the molecule in a compact form.

Line-Angle Formula

A line-angle formula, also known as a skeletal formula, is a simplified representation of a chemical structure where vertices represent carbon atoms and lines represent bonds. This method omits hydrogen atoms attached to carbons, making it easier to visualize complex organic molecules and their connectivity at a glance.

Substituted Aromatic Compounds

Substituted aromatic compounds are organic molecules that contain a benzene ring with one or more substituents attached to it. In the case of 3-ethylbenzoic acid, the ethyl group is a substituent on the benzene ring, and understanding the position of this substituent is crucial for accurately drawing the structural formulas.

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