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Describe the role of the following: Cryolite in the extraction of aluminium from pure alumina. NaCN…
Describe the role of the following:
(i)
Cryolite in the extraction of aluminium from pure alumina.
(ii)
NaCN in the extraction of silver from a silver ore.
(iii)
Coke in the extraction of iron from its oxides.
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From ISC 2019 Chemistry Paper 1, question 11.