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For the substance given below, describe the role played in the extraction of aluminium. Cryolite - Chemistry

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Question

For the substance given below, describe the role played in the extraction of aluminium.

Cryolite

Short Answer

Solution

  • It lowers the fusion temperature from 2050°C to 950°C and enhances conductivity.
  • This, in turn, improves the electrolyte's conductivity and reduces the need for electricity, which is the primary energy source for alumina reduction.
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2014-2015 (March) Science Paper 2
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