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Cr is produced by electrolysis of an aci...

Cr is produced by electrolysis of an acidic solution of `CrO_(3)` . The reaction is : `CrO_(3)(aq)+6H^(+)6erarrCr(s)+3H_(2)O` . Calculate : ( i ) the amount of Cr produced ( in grams ) , when 24000 C of electricity is passed ? ( Cr = 52 ) ( ii ) the time required to produce 1.5 g Cr when 12.5 A current is passed ?

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(i) `6xx96500C-="52 g Cr "therefore" 24000 C"-=2.1554g Cr,`
(ii) `"52 g Cr"-=6xx96500C" "therefore "1.5 g Cr "-=16701.92C`
`Q=Ixxt" or, "16701.92=12.5xxt therefore t=1336.15s`
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