Extraction of Metals - Result Question 33

####33. Electrolytic reduction of alumina to aluminium by Hall-Heroult process is carried out

$(2000,1 M)$

(a) in the presence of $NaCl$

(b) in the presence of fluorite

(c) in the presence of cryolite which forms a melt with lower melting temperature

(d) in the presence of cryolite which forms a melt with higher melting temperature

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Solution:

  1. Cryolite is added to alumina in order to lower the melting point.


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