🔍 Key Concepts

• Chemical synonyms – many chemicals have common names and technical names • How chemicals are listed in the Chemical Data Guide (by proper/technical name, not slang or outdated terms) • Relationship between carbolic acid and aromatic alcohols (benzene ring with an –OH group)

💭 Think About

• Which of the choices is known to be an aromatic compound related to benzene with an –OH (hydroxyl) group attached? • Do any of the other choices look like simple alcohols or sulfur-containing compounds rather than an aromatic acid? • If you searched an index by proper chemical name instead of common name, which of these four would you expect to find for carbolic acid?

✅ Before You Answer

• Verify which option is commonly used in industry as the proper name for carbolic acid • Eliminate any choice that clearly contains sulfur (sulfide), since carbolic acid does not • Confirm that the remaining correct choice is widely recognized as a toxic aromatic compound used as a disinfectant in older literature