Question

give reason alumina is reduced by electrolysis​

Answer 1

Explanation:

Aluminium is more reactive than carbon and it has more affinity for oxygen, therefore, alumina cannot be reduced with carbon but is extracted by electrolytic reduction. (i) is a liquid at room temperature. (ii) can be easily cut with a knife.

Answer 2

Answer:

The mixture of cryolite and aluminium oxide has a lower melting point than pure aluminium oxide. This means a lower amount of energy is required to establish effective conditions for electrolysis and thus makes it more cost effective.

Explanation:

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