I did this lab called stoichiometry using copper and there is a question that I don't understand. They ask what ions are you removing when you wash the precipitate copper? I dont expect the answer b/c obviously u guy don't know the lab, but can you guy explain what they mean by asking that question. Thanks
You started the experiment with a soluble copper salt in solution, probably copper sulfate or copper chloride. You added a chemical which interacted with the copper salt, allowing the copper to become metallic copper or an insoluble copper salt, which then precipitates. The remaining liquid in the precipitate contains another soluble salt. What is it? To figure this out, what did you start with? What did you add? If you now have an insoluble copper salt or metallic copper, the ions you get in the rinse are the other components you used in the reaction.
