One Faraday of electricity is passed through molten A l 2 O 3 , aqueous solution of C u S O 4 and molten NaCl taken in three different electrolytic cells connected in series. The mole ratio of Al, Cu

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One Faraday of electricity is passed through molten A l 2 O 3 , aqueous solution of C u S O 4 and molten NaCl taken in three different electrolytic cells connected in series. The mole ratio of Al, Cu and Na deposited at the respective cathode is

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A l 3 + + 3 e - → A l 3F = 1 mol 1F= 1 / 3 mol C u 2 + + 2 e - → C u 2F =1 mol 1F = 1 / 2 mol N a + + e - → N a 1F =1 mol The mole ratio of Al, Cu and Na deposited at the respective cathode is 1 3 : 1 2 : 1 or 2: 3: 6

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