What is the net ionic equation for potassium sulfate is reacted with calcium bromide?

Answer 1

The previous answer provided by @Reno O.B. is absolutely correct, but maybe you'd be helped by seeing how this was arrived at.

The molecular equation is K₂SO₄(aq) + CaBr₂(aq) ==> CaSO₄(s) + 2KBr(aq)

The total ionic equation is 2K⁺(aq) + SO₄^2-(aq) + Ca²⁺(aq) + 2Br^-(aq) => CaSO₄(s) + 2K⁺(aq) + 2Br^-(aq)

After canceling spectator ions, we arrive at the net ionic equation of Ca²⁺(aq) + SO₄^2-(aq) => CaSO₄(s)

Answer 2

Goal: Write an equation if a reaction actually occurs.

In this reaction, CaSO4, which is an insoluble precipitate, forms. The solubility rules will inform you about ions that form precipitates

The net ionic equation list only the ions that were involved in precipitate formation.

Ca2+(aq) + SO42- -->CaSO4(s)