11. Stop heating before all the water in the evaporating basin leaves the copper sulfate solution. 12. Allow the evaporating basin to cool, then leave it aside for a few days or in a drying oven.

Add the reaction mixture from the beaker to the filter paper. 6. Collect the filtrate, which is the copper(II) sulfate solution. Dispose of the residue, which is the unreacted copper(II ...