Copper is purified by electrolysis. Electricity is passed through solutions containing copper compounds, such as copper(II) sulfate. The anode (positive electrode) is made from impure copper and ...

The volume of hydrogen given off is twice the volume of oxygen given off.

From there, the copper sulfate is placed in an electrolysis cell using a platinum ... all of the copper will have deposited itself on the copper electrodes. The other interesting thing about ...

China could potentially lead the race through carbon dioxide electrolysis ... also studied the atomic structures of active sites in copper-based catalytic systems to understand the nature of ...