But it’s actually reacted with the sulfuric acid and made the solution blue. This is copper sulfate solution. Once we see unreacted copper oxide in the beaker…we know that all of the acid has ...

for a heavy electric current passing through a copper sulphate solution. Pure copper is deposited from the copper sulphate solution on a very thin sheet of pure cop- per which forms the outgoing ...

Zinc sulfide is made into an aqueous solution, before a highly diluted copper sulfate solution is added, along with ammonium chloride to act as a flux. The mixture is stirred, before being heated ...