Question

LAQ : Mention the composition of electrolyte and electrode reactions of extraction of aluminium

September 11, 2023

Answer

Question

Mention the composition of electrolyte and electrode reactions of extraction of aluminium.

Answer

Composition of electrolytes: Mixture of 60% cryolite (AIF₃, 3NaF), 20% alumina (Al₂O₃), and 20% fluorospar (CaF₂).

Cathode reaction:

2Al³⁺ + 6e → 2Al (Reduction)

Anode reaction:

30^2- – 6e → (3/2)O₂ (oxidation)

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