Final answer:
The question pertains to a chemical reaction between sodium sulfate (Na2SO4) and potassium iodide (KI), which is classified as a double displacement reaction; however, as both of the products are aqueous, no net ionic equation is present, indicating no observable reaction occurs.
Step-by-step explanation:
The student's question involves identifying the type of chemical reaction and completing the chemical equation for the reaction of sodium sulfate (Na2SO4) and potassium iodide (KI). When considering the double displacement reactions provided in the reference information, we can infer that a similar reaction would occur with Na2SO4 and KI.
For the given reactants Na2SO4 (aq) and KI (aq), we would expect a double displacement reaction to occur, where the cations and anions exchange partners. However, since both products would be aqueous as in Na2SO4 (aq) + 2KI(aq) → 2NaI(aq) + K2SO4(aq), there is no net ionic equation. This means no precipitate forms, and there is no observable reaction in this specific case. Nevertheless, the reaction is classified as a double displacement reaction.