 We put one molar copper sulfate into the YouTube. We place graphite electrodes into the YouTubes. We're going to pass current through the cell. In the cathode side, the copper ion cannot be oxidized. It can only be reduced. The copper ion is more easily reduced than the water. So we'll see copper metal form on the electrode. In the anode, the sulfate ion is not easily oxidized. The copper ion cannot be oxidized. So what we're going to do is see the oxidation of water. We'll see oxygen gas formed at the anode.