Spectator Ions
What is Spectator Ions?
Spectator ions are ions present in a reaction mixture that do not participate in the actual chemical change; they appear on both sides of the complete ionic equation and cancel out when writing the net ionic equation. Identifying spectator ions clarifies the true driving force of a reaction. For example, in AgNO₃(aq) + NaCl(aq) → AgCl(s) + NaNO₃(aq), the Na⁺ and NO₃⁻ ions are spectator ions.
Key Facts
Frequently Asked Questions
Spectator ions are ions present in a reaction mixture that do not participate in the actual chemical change; they appear on both sides of the complete ionic equation and cancel out when writing the net ionic equation. Identifying spectator ions clarifies the true driving force of a reaction. For example, in AgNO₃(aq) + NaCl(aq) → AgCl(s) + NaNO₃(aq), the Na⁺ and NO₃⁻ ions are spectator ions.