Final answer:
HI(aq) reacts with H2O(l) to form H3O+(aq) and I-(aq), which is characteristic of strong acids that completely ionize in water, such as hydroiodic acid. The complete equation is HI(aq) + H2O(l) → H3O+ (aq) + I− (aq).
Step-by-step explanation:
When hydroiodic acid (HI) is added to water (H2O), a reaction occurs in which the HI dissociates into its ions. This process can be represented by the completed equation:
HI(aq) + H2O(l) → H3O+ (aq) + I− (aq)
The hydrogen ion (H+) from HI combines with a water molecule (H2O) to form the hydronium ion (H3O+), and the iodine forms the iodide ion (I−).
This reaction is characteristic of strong acids in water where the acid completely ionizes, yielding hydronium ions and the corresponding anions.