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In the Hall-Héroult process for producing aluminum, aluminum is electrolytically reduced from Al2O3 Electrochemistry Chemistry Question

Question

In the Hall-Héroult process for producing aluminum, aluminum is electrolytically reduced from Al2O3 dissolved in molten cryolite, Na3AlF6, while a graphite anode is oxidized to CO2. What is the ratio of the mass of Al deposited on the cathode to the mass of C lost from the anode?

A.

1.50:1

B.

2.25:1

C.

3.00:1

✓ Correct
D.

3.36:1

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