# Can there be two precipitates in a double displacement reaction?

On one of my chemistry homework's, I am doing a double displacement reaction and the question is having me predict the products and make a net ionic equation for copper(|I) sulfate and barium acetate reacting.

$$\ce{CuSO4(aq) + Ba(OH)2(aq) -> Cu(OH)2 + BaSO4}$$

I was able to predict the products of it, but when I was starting to do the net ionic equation, I came across the problem that there were no spectator ions and I am not sure if two precipitates can form out of a double displacement reaction.

## 1 Answer

Yes, you were right in concluding that there are no spectator ions. How is that a problem? There is no commandment that says "Thou shalt not have two precipitates in one reaction". Indeed, such double precipitations are very much possible, though rare. The most famous example is probably the formation of lithopone.