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In an electrolytic cell , molten Al(2)O...

In an electrolytic cell , molten `Al_(2)O_(3)` is taken , through which a current of 125A is passed for sometime , when 125g Al is produced . Calculate the time required .

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`Al^(3+)+3erarrAl" "Q=Ixxt=125xxtC`
`27gAl-=3xx96500C`
`therefore" 125g Al"-=1.34xx10^(6)C" or, "125xxt=1.34xx10^(6)`
`therefore" "t=10720s.`
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