He told me why acetic acid is useful ? ?

Acetic acid is useful for a variety of reasons, including its role as a key component in vinegar production, its ability to act as a disinfectant and cleaning agent, and its use in the production of various chemicals and plastics. Additionally, acetic acid is commonly used in food preservation and flavoring, as well as in the textile and pharmaceutical industries.

- It is a common ingredient in vinegar, which is used as a food preservative, flavoring agent, and cleaning agent.
- It is used in the production of aspirin, which is a pain reliever.
- It is used in the tanning of leather.
- It is used in the manufacture of dyes and other chemicals.
- It is used as a solvent for a variety of substances.