write the balance, net, ionic equation, for the precipitation of barium carbonate from aqueous solution, include states of matter in your answer

Answer 1

First determine the reactants and products.

Start with barium carbonate. The carbonate ion is CO₃^-2 so the barium carbonate compound would be BaCO₃

If looking for a precipitate, I would look at a double replacement reaction. Looking at a solubility table, you would see something like this for the carbonate (CO₃^-2) column:

This shows that sodium carbonate is aqueous in solution so it becomes a possible reactant. It doesn't take much to consider barium chloride as the the other reactant (the solubility table also shows this as aqueous in solution. So a POSSIBLE double replacement chemical reaction equation would be:

BaCl₂(aq) + Na₂CO₃(aq) → BaCO₃(s) + 2NaCl(aq)

This is called the molecular or balanced equation.

The ionic equation would be:

Ba⁺²(aq) + 2Cl^-(aq) + 2Na⁺(aq) + CO₃^-2(aq) → BaCO₃(s) + 2Na⁺(aq) + 2Cl^-(aq)

because all the aqueous compounds disassociate in solution.

To get the net equation, just remove the ions that are the same on both sides:

Ba⁺²(aq) + CO₃^-2(aq) → BaCO₃(s)