List of the Strong Acids

These are the strong acids. What makes them "strong" is that they completely dissociate into their ions (H⁺ and an anion) when they are mixed with water. Any other acid is a weak acid. There are only seven strong acids, so you might want to commit the list of strong acids to memory. Note some instructors may ask for the six strong acids. That typically refers to the first six acids on this list.

HCl - hydrochloric acid

HNO₃ - nitric acid
H₂SO₄ - sulfuric acid
HBr - hydrobromic acid
HI - hydroiodic acid (also known as hydriodic acid)
HClO₄ - perchloric acid
HClO₃ - chloric acid

As the strong acids become more concentrated, they may be unable to fully dissociate. The rule of thumb is that a strong acid is 100 percent dissociated in solutions of 1.0 M or less.

Format

mla apa chicago

Your Citation

Helmenstine, Anne Marie, Ph.D. "List of the Strong Acids." ThoughtCo, Feb. 13, 2018, thoughtco.com/list-of-the-strong-acids-603651. Helmenstine, Anne Marie, Ph.D. (2018, February 13). List of the Strong Acids. Retrieved from https://www.thoughtco.com/list-of-the-strong-acids-603651 Helmenstine, Anne Marie, Ph.D. "List of the Strong Acids." ThoughtCo. https://www.thoughtco.com/list-of-the-strong-acids-603651 (accessed April 19, 2018).