What is the equation for the reaction at the cathode during the electrolysis of molten lead(II) iodide?

Pb²⁺ (l) + 2e⁻ → Pb (l) . Electrolysis is a technique that uses a direct electric current (DC) to create a chemical reaction that would otherwise not occur spontaneously. The cathode is the negatively charged electrode (while the anode is the positive side) and is where the reduction reaction takes place.

Iodide is a type of salt with the formula Pbl2. The 2e- refers to the electricity that runs through the cathode from the energy source, and two electrons cause the two positive iodide molecules to separate.