Where do positive ions gain electrons during electrolysis?

• A. Cathode
• B. Anode
• C. Electrolyte
• D. External circuit

Answer: (A)

During electrolysis, reduction occurs at the cathode. Positive ions (cations) are attracted to this negatively charged electrode and gain electrons there, becoming neutral atoms or molecules. The external circuit provides the electrons to the cathode, while the electrolyte supplies the ions that move toward the electrodes. At the other electrode, oxidation happens as ions lose electrons. So, positive ions gain electrons at the cathode.