Consider the electrolysis of aqueous copper sulfate solution using platinum electrodes: 1. Copper metal is deposited at the cathode. 2. Oxygen gas is liberated at the anode. Which of the statements given above is/are correct?

💡 Solution & Explanation

During the electrolysis of aqueous copper sulfate with inert platinum electrodes, copper ions migrate to the cathode and gain electrons to form copper metal deposits, while water molecules are oxidized at the anode to produce oxygen gas and hydrogen ions. If copper electrodes were used instead, the anode itself would dissolve. Faraday laws of electrolysis govern the mass of substances liberated at electrodes. Electroplating is widely used for coating metallic objects.