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How many faradays are released when 12.7...

How many faradays are released when 12.7 g of copper metal is changed into copper ions ?

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The correct Answer is:
0.4 faraday
`underset(63.5)underset("1 mole")(Cu) rarr Cu^(2+) +underset(2F)underset("2 mole")(2e^(-))`
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