Science, Tech, Math › Science 5 Common Acids in the Home They are found in everything from vinegar to batteries Share Flipboard Email Print Kemter/Getty Images Science Chemistry Chemistry In Everyday Life Basics Chemical Laws Molecules Periodic Table Projects & Experiments Scientific Method Biochemistry Physical Chemistry Medical Chemistry Famous Chemists Activities for Kids Abbreviations & Acronyms Biology Physics Geology Astronomy Weather & Climate By Anne Marie Helmenstine, Ph.D. Chemistry Expert Ph.D., Biomedical Sciences, University of Tennessee at Knoxville B.A., Physics and Mathematics, Hastings College Dr. Helmenstine holds a Ph.D. in biomedical sciences and is a science writer, educator, and consultant. She has taught science courses at the high school, college, and graduate levels. our editorial process Facebook Facebook Twitter Twitter Anne Marie Helmenstine, Ph.D. Updated December 13, 2019 Acids are common chemicals. Read on for a list of five acids found in the home. Acids Found at Home Each acid below is followed by its chemical formula as well as a brief description of where you might find it in your house. Acetic acid (HC2H3O2) is found in vinegar as well as products that contain vinegar, such as ketchup.Citric acid (H3C6H5O7) is found in citrus fruits. It is also used in jams and jellies and to add a tangy flavor to other foods.Lactic acid (C3H6O3) is found in milk and other dairy products.Ascorbic acid (C6H8O6) is vitamin C. It is found in citrus fruits as well as some other fruits and juices.Sulfuric acid (H2SO4) is found in car batteries and some drain cleaners.