Chapter 21, Problem 21.41QP

Interpretation Introduction

Interpretation:

The Hall process for preparation of aluminum has to be described.

Concept introduction:

Hall process:

• Electrolysis is the key process involved in Hall process.
• The smelting or separation of aluminum from its ores is done by Hall process. This is the major industrial method for smelting of aluminum.
• Elemental aluminum is not produced by doing electrolysis of an aqueous aluminum, why because hydronium ion easily oxidize the elemental aluminum.
• So, we use molten aluminum salt as raw material for the electrolysis process in Hall process.