Science, Tech, Math › Science Strong Acids and the World's Strongest Acid Share Flipboard Email Print zeljkosantrac/Getty Images Science Chemistry Basics Chemical Laws Molecules Periodic Table Projects & Experiments Scientific Method Biochemistry Physical Chemistry Medical Chemistry Chemistry In Everyday Life 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 July 03, 2019 Most of the standardized tests students take, like the SAT and GRE, are based on your ability to reason or to understand a concept. The emphasis isn't on memorization. However, in chemistry there are some things you just have to commit to memory. You'll remember the symbols for the first few elements and their atomic masses and certain constants just from using them. On the other hand, it's harder to remember the names and structures of the amino acids and the strong acids. The good news, regarding the strong acids, is any other acid is a weak acid. The 'strong acids' dissociate completely in water. Strong Acids You Should Know HCl - hydrochloric acid HNO3 - nitric acid H2SO4 - sulfuric acid HBr - hydrobromic acid HI - hydroiodic acid HClO4 - perchloric acid The World's Strongest Acid Although this is the strong acid list, probably found in every chemistry text, none of these acids hold the title of World's Strongest Acid. The record-holder used to be fluorosulfuric acid (HFSO3), but the carborane superacids are hundreds of times stronger than fluorosulfuric acid and over a million times stronger than concentrated sulfuric acid. The superacids readily release protons, which is a slightly different criterion for acid strength than the ability to dissociate to release a H+ ion (a proton). Strong Is Different from Corrosive The carborane acids are incredible proton donors, yet they are not highly corrosive. Corrosiveness is related to the negatively-charged part of the acid. Hydrofluoric acid (HF), for example, is so corrosve it dissolves glass. The fluoride ion attacks the silicon atom in silica glass while the proton is interacting with oxygen. Even though it is highly corrosive, hydrofluoric acid is not considered to be a strong acid because it does not completely dissociate in water.Strength of Acids & Bases | Titration Basics Cite this Article Format mla apa chicago Your Citation Helmenstine, Anne Marie, Ph.D. "Strong Acids and the World's Strongest Acid." ThoughtCo, Feb. 16, 2021, thoughtco.com/strong-acids-you-should-know-3976037. Helmenstine, Anne Marie, Ph.D. (2021, February 16). Strong Acids and the World's Strongest Acid. Retrieved from https://www.thoughtco.com/strong-acids-you-should-know-3976037 Helmenstine, Anne Marie, Ph.D. "Strong Acids and the World's Strongest Acid." ThoughtCo. https://www.thoughtco.com/strong-acids-you-should-know-3976037 (accessed April 17, 2021). copy citation Watch Now: What are the Differences Between Acids and Bases?