Aqueous copper(II) sulfate may be electrolysed with either carbon electrodes or copper electrodes. Which statement explains what occurs at the positive electrode?
- ACopper is deposited if the electrode is made from carbon.
- BCopper is deposited if the electrode is made from copper.
- COxygen gas is produced if the electrode is made from carbon.
- DOxygen gas is produced if the electrode is made from copper.