Final answer:
The net ionic equation for the reaction between NiCl₃(aq) and K₃PO₄(aq) is Ni³⁺ (aq) + 3PO₄³⁻ (aq) → Ni₃(PO₄)₂ (s).
Step-by-step explanation:
The net ionic equation for the reaction between NiCl₃(aq) and K₃PO₄(aq) can be obtained by eliminating the spectator ions. Spectator ions are the ions that appear on both sides of the equation and do not participate in the reaction.
The balanced equation for the reaction is:
NiCl₃(aq) + 3K₃PO₄(aq) → Ni₃(PO₄)₂ (s) + 9KCl(aq)
In the net ionic equation, the spectator ions K⁺ and Cl⁻ are eliminated:
Ni³⁺ (aq) + 3PO₄³⁻ (aq) → Ni₃(PO₄)₂ (s)