Final answer:
The apparatus used in the electrolysis of molten BaBr₂ is an electrolytic cell. In this cell, electric current is applied to provide a source of electrons for driving the reaction in a nonspontaneous direction. It consists of two electrodes - an anode and a cathode - that are immersed in the molten BaBr₂.
Step-by-step explanation:
The apparatus used in the electrolysis of molten BaBr₂ is an electrolytic cell.
In an electrolytic cell, electric current is applied to provide a source of electrons for driving the reaction in a nonspontaneous direction. It consists of two electrodes - an anode and a cathode - that are immersed in the molten BaBr₂, which acts as the electrolyte.
When electric current is applied, the BaBr₂ is split into its constituent ions, Ba²+ and 2Br-. The Ba²+ ions are attracted to the cathode (negative electrode) and are reduced, while the 2Br- ions are attracted to the anode (positive electrode) and are oxidized.