NIE: Sulfate, Hydroxide, Sulfide, Carbonate, Phosphate

Question

Consider the reaction when aqueous solutions of sodium phosphate and chromium(III) chloride are combined. The net ionic equation for this reaction is:

Answer 1

First, let's look at the molecular equation for this reaction:

Na₃PO₄(aq) + CrCl₃(aq) ==> 3NaCl(aq) + CrPO₄(s)

Since a solid is formed, and all the other species are aqueous, we can write the net ionic as...

Cr³⁺(aq) + PO₄^3-(aq) ==> CrPO₄₍s)