Solids that have large particles linsoluble 2 We can use copper oxide in the laboratory to make copper sulfate by reacting it with Rittere
paper
sulfuric acid but copper sulfate can also be purchased directly from chemical
companies. There is normally excess copper oxide left over after the reaction with
sulfuric acid.
Explain whether we should keep or discard the residue if we use filtration to
separate out the unused solid copper oxide.