One g equivalent of Na metal is formed f...

One g equivalent of Na metal is formed from electrolyis of fused NaCl. No of "mole" of Al from the fused `Na_(3)AlF-(6)` with the same current passed is:

`1/3`

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The function of fluorspar in the electrolytic reduction of alumnia dissolved in fused cryotile (Na_(3)AlF_(6)) is:

Read the following and answer any four questions During extraction of metals, electrolytic refining is used to obtain pure metals. During the process, the impure metal is made the anode and a thin strip of pure metal is made the cathode. The solution of the metal salt is used as an electrolyte. On passing the current through the electrolyte, the pure metal from the anode dissolves from the electrolyte. An equivalent of pure metal from the electrolyte is deposited on the cathode. Which of the metals are refined by electrolytic refining? (i) Au (ii) Cu (iii) Na (iv) K

During extraction of metals, electrolytic refining is used to obtain pure metals. During the process, the impure metal is made the anode and a thin strip of pure metal is made the cathode. The solution of the metal salt is used as an electrolyte. On passing the current through the electrolyte, the pure metal from the anode dissolves from the electrolyte. An equivalent of pure metal from the electrolyte is deposited on the cathode. Which of the metals are refined by electrolytic refining? I. Au II. Cu III. Na IV. K

State as to why (a) a solution of Na_(2)CO_(3) is alkaline ? (b) alkali metals are prepared by electrolysis of their fused chlorides? (c) sodium is found to be more useful than potassium ?

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