Final answer:
A strong acid completely dissociates into ions when dissolved in water. An example of a strong acid is hydrochloric acid (HCl), which releases hydrogen ions (H+) and chloride ions (Cl-) in solution.
Step-by-step explanation:
A strong acid is one that completely dissociates into ions when dissolved in water. An example of a strong acid is hydrochloric acid (HCl), which dissociates into hydrogen ions (H+) and chloride ions (Cl-) when dissolved in water. The dissociation reaction of hydrochloric acid can be represented as:
HCl(aq) → H+(aq) + Cl-(aq)
So, when HCl is dissolved in water, it releases hydrogen ions and chloride ions.