Question

Describe the role played in the extraction of aluminium by each of the substance listecd
Sodium hydroxide ​

Answer 1

Answer:

It increases the mobility of the fused mixture by acting as a solvent. It increases the conductivity of the mixture. 2) Sodium hydroxide helps in the purification of impure bauxite. It converts the impure bauxite into sodium aluminate.

Answer 2

Answer:

here is your answer

Explanation:

Cryolite: ... (1) Cryolite: to reduce the melting point of alumina and increase the conductivity of the solution. (2) sodium hydroxide: for purification of bauxite ore as a leaching agent. (3) Graphite: As anode and make the reduction of Al2O3 easier

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