Charge Carriers in Electrolysis Circuits Steps: - Identify the setup: electrolysis of molten PbBr₂ uses inert electrodes, with electrons flowing in external wires and ions in the molten electrolyte. - Trace arrow paths: arrows 1–3 likely represent external circuit wires where electrons carry charge from power source to electrodes. - Examine the fourth arrow: in the electrolyte near the cathode, lead ions (Pb²⁺) migrate toward the cathode, carrying positive charge. - Match to options: only C assigns electrons to wire arrows and lead ions to the electrolyte arrow toward cathode. Why C is correct: - In electrolysis, external circuit conduction follows Ohm's law via electron flow in metals, while ionic conduction in molten salts involves cation migration (Pb²⁺ to cathode) per Faraday's laws. Why the others are wrong: - A: Incorrectly places bromide ions and lead ions in wires, where only electrons conduct. - B: Misassigns electrons to all wires but swaps ions in electrolyte, ignoring lead ions' role at cathode. - D: Vaguely uses "ions" for the last arrow, failing to specify lead ions as the cations moving to …