Answer:
NO₂⁻ and Na⁺
Step-by-step explanation:
- The reaction between nitrous acid and sodium hydroxide is given by;
HNO₂(aq) + NaOH(aq) → NaNO₂(aq) + H₂O(l)
- The complete ionic equation for the reaction will be;
H⁺(aq)NO₂⁻(aq) + Na⁺(aq)OH⁻(aq) → Na⁺(aq)NO₂⁻(aq) + H₂O(l)
- The net ionic equation will be;
H⁺(aq)+ OH⁻(aq) → H₂O(l)
- NO₂⁻ and Na⁺ are spectator ions and therefore they are not included while writing the net ionic equation.
- Spectator ions are ions that do not change state after the reaction has taken place.