Which one of the following species or compounds reacts at the cathode in the Hall-Héroult process?

Question

Quizplus · Accepted Answer

In the Hall-Héroult process, aluminum is produced by electrolysis of molten AlF3 in the presence of Cryolite (Na3AlF6) at around 1000°C. At the cathode, AlF6^3- ions combine with electrons to form Al metal. Therefore, choice D, AlF6^3-, is the species that reacts at the cathode in the Hall-Héroult process.

Which One of the Following Species or Compounds Reacts at the Cathode