What are acids used for in the real world?

Acids are used in various applications in the real world, such as in food production (e.g., citric acid in soft drinks), cleaning products (e.g., hydrochloric acid in removing rust), and industry (e.g., sulfuric acid in manufacturing fertilizers and chemicals). They are also used in medicine (e.g., acetic acid in vinegar as a mild disinfectant) and in research laboratories for various scientific experiments.