When aqueous solutions of sodium carbonate and zinc iodide are combined, solid zinc carbonate and a solution of sodium iodide are formed. The net ionic equation for this reaction is:

CO₃²⁻ + Zn²⁺ → ZnCO₃(s)

Explanation:

The net ionic equation is defined as a chemical equation for a reaction that lists only those species participating in the reaction.

In the reaction of sodium carbonate (Na₂CO₃) with zinc iodide (ZnI₂) that produce solid zinc carbonate (ZnCO₃) and a solution of sodium iodide (NaI) the formula is:

2Na⁺ + CO₃²⁻ + Zn²⁺ + 2I⁻ → ZnCO₃(s) + 2Na⁺ + 2I⁻

The net ionic equation is:

CO₃²⁻ + Zn²⁺ → ZnCO₃(s)

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