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How long does it take to deposit a coating of gold 1.00 um thick on a...

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Chemistry

How long does it take to deposit a coating of gold 1.00 um thickon a disk-shaped medallion 4.00cm in diameter and 2.00mm thick atconstant current of 86A? The density of gold 19.3 g/cm3and the gold is from an Au(III) solution. (answer in secondsplease!)

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4.2 Ratings (494 Votes)
The reaction would be which means 1 mole gold requires 3 moles of electronsWhile depositing gold on the edges the diameter of a disk willbe increased from 400 cm to 400 cm 2100 um 400 cm 00002cm after using    See Answer
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