Final answer:
The net ionic equation for the precipitation of Mg(OH)2 is Mg(OH)₂ (s) → Mg²+ (aq) + 2OH⁻ (aq).
Step-by-step explanation:
The net ionic equation for the precipitation of Mg(OH)2 is:
Mg(OH)₂ (s) → Mg²+ (aq) + 2OH⁻ (aq)
In this reaction, solid Mg(OH)2 dissociates into aqueous Mg²+ and OH⁻ ions. The net ionic equation shows only the species that are directly involved in the reaction. In this case, the Mg²+ and the OH⁻ ions are the reactants and products.