Question

What happens when a strong acid is added to water?

Answer 1

It dissociates.

Explanation:

The proton or protons (=`H^+`) attach to a water molecule to form the hydronium ion:
`H^+ + H_2O->H_3O^+`

The rest of the acid is left as an anion. Example:
`HCl+H_2O->H_3O^+ +Cl^-`