Final answer:
The net ionic equation for the reaction between nickel(II) oxide (NiO) and nitric acid is NiO(s) + 2H⁺(aq) → Ni²⁺(aq) + H₂O(l), which excludes the spectator nitrate ions.
Step-by-step explanation:
The question asks for the net ionic equation for the reaction between NiO(s) and an aqueous solution of nitric acid. Based on the balanced chemical equation provided (NiO(s) + 2HNO₃(aq) → Ni(NO₃)₂(aq) + H₂O(l)), we know that nickel(II) oxide reacts with nitric acid to form nickel(II) nitrate in solution and water.
The net ionic equation represents only the species that actually participate in the reaction, excluding spectator ions that don't change during the reaction. Thus, considering that the nitrate ion is a spectator ion, the net ionic equation for this reaction is:
NiO(s) + 2H⁺(aq) → Ni²⁺(aq) + H₂O(l)
This equation shows that solid nickel(II) oxide reacts with hydrogen ions to form aqueous nickel(II) ions and liquid water.
The net ionic equation for the reaction between NiO(s) and an aqueous solution of nitric acid is NiO(s) + 2H⁺(aq) + 2NO₃⁻(aq) → Ni²+(aq) + 2NO₃⁻(aq) + H₂O(l). In this reaction, the nickel oxide (NiO) reacts with the hydrogen ion (H⁺) and the nitrate ion (NO₃⁻) from nitric acid to form nickel(II) ion (Ni²+) and nitrate ion (NO₃⁻) along with water (H₂O) as a product.