# What makes a strong acid strong?

Nov 9, 2015

It completely disassociates in water

#### Explanation:

A strong acid completely disassociates in water, meaning a strong acids conjugate base is a weaker base than water. That means that it does not have the ability to gain an ${H}^{+}$.

For example:

$H C l$ is a strong acid, when it ionizes it disassociates into an ${H}^{+}$ and $C {l}^{-}$atom. The $C {l}^{-}$ is neutral, in other words it cannot take an ${H}^{+}$ from the ${H}_{3} {O}^{+}$.