Question

(ii) Describe the process of preparation of aluminium by the electrolysis of aluminium.​

Answer 1

Answer:

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Explanation:

The electrolysis of alumina is carried out at a low temperature by dissolving it in molten cryolite (Na3AIF6). The solution of alumina in cryolite and small amount of fluorspar (CaF2) is added in the mixture to lower its melting point up to 1000∘C.

Answer 2

Answer:

Aluminum is extracted from aluminum oxide by a process called electrolysis. First of all, aluminum oxide needs to be in molten form to extract the aluminum ions. ... Therefore, aluminum oxide is dissolved in molten cryolite. Cryolite is a form of an aluminum compound that has a lower melting point that aluminum oxide.

Explanation:

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