(i) What is the role of cryolite in the extraction of aluminium ? (ii) What is the role of limestone in the extraction of iron from its oxides ?
(i) What is the role of cryolite in the extraction of aluminium ?
(ii) What is the role of limestone in the extraction of iron from its oxides ?
5 views
1 Answers
(i) It lowers the melting point of alumina `(Al_(2)O_(3))` and also makes it conducting.
(ii) It decomposes on heating to give CaO which acts as a basic flux and helps in the formation of slag.
5 views
Answered