Strong acid

In chemistry, a strong acid is an acid which ionizes (splits) completely in a solution of water. It always loses a proton (A H₊) when put in water. A weak acid does not always lose a proton, though; It can lose its proton, but not all the time. They also have a very low pH, usually between 1 and 3. Many strong acids have a negative pKa value, which means they are very strong.

The six common strong acids are: (Acronym:CBSPIN)

1. HydroChloric acid HCl
2. HydroBromic acid HBr
3. Sulfuric acid H₂SO₄
4. Perchloric acid HClO₄
5. HydroIodic acid HI
6. Nitric acid HNO₃

Almost strong acids include:

1. Chloric acid HClO₃

Strong Acid Media

• 

  Image of a strong acid mostly dissociating. The small red circles represent H+ ions.

• 

  Image of a weak acid partly dissociating

• 

  2-chlorobutanoic acid, used in acid

• 

  3-chlorobutanoic acid, used in acid

• 

  4-chlorobutanoic acid, used in acid

• 

  en:butyric acid aka butanoic acid