Al(2)O(3) is reduced by electrolysis at ...

`Al_(2)O_(3)` is reduced by electrolysis at low potentials and high current. If `4.0 xx 10^(4)` amperes of currernt is passed through molten `Al_(2)O_(3)` for 6 hours, what mass of aluminium is produced? (Assume 100 % current efficiency, At. Mass of `Al = 27 u`)

`8.1 xx 10^(4)` g

`2.4 xx 10^(5)` g

`1.3 xx 10^(4)` g

`9.0 xx 10^(3)` g

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Al_2 O_3 is reduced by electrolysis at ow potentials and high currents, If 4.0 xx 10^(4) amperes of current is passed through molten Al_2O_3 fro 6 hours , what mass of alumininum is produced ? (Assume 100% current efficiency gt At mass of Al = 27 g "mol"^(-) ) .

A current of 0.5 amp is passed through excess of molten mixture of Al_(2)O_(3) and Na_(3)AlF_(6) for 9.65 hours. The mass of Al (in mg) deposited at the cathode, with (100/12)% current efficiency is (Al = 27).

One ampere of current is passed for 9650 seconds through molten AlCl_(3) What is the weight in grams of Al deposited at cathode? (Atomic weight of Al=27)

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