In the electrolysis of alumina, cryolite is added to

In the electrolysis of alumia, cryolite is added to-

Explain the following (i) Excess of carbon is added to zinc metallurgy. (ii) In the elctrolysis of alumina, cryolite is added to alumina. (iii) Coke does not cause reduction of Al_(2)O_(3) . (iv) Gold is soluble in aquaregia, silver is not.

Explain the following (i) Excess of carbon is added to zinc metallurgy. (ii) In the elctrolysis of alumina, cryolite is added to alumina. (iii) Coke does not cause reduction of Al_(2)O_(3) . (iv) Gold is soluble in aquaregia, silver is not.

In the electrolusis of alumina. Cryolite is absorbed to

In the electrolysis of alumina using cryolite, the reaction that takes place at cathode is

In the electrolysis of alumina it is mixed with cryolite (Na_(3)AlF_(6)) and Fluorspar (CaF_(2)) in the ratio 20:40:20 . The function of cryolite and fluorspar is