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A current of 1.0 A was passed for 2 hr t...

A current of 1.0 A was passed for 2 hr through a solution of cuprocyanide and 0.3745 g of copper was deposited on the cathode. Calculate the current efficiency for the copper deposition. (`Cu-63.5`)

A

`79%`

B

`39.5%`

C

`63.25%`

D

`63.5%`

Text Solution

Verified by Experts

The correct Answer is:
A
m(theoretical)`=(63.5xx0.1xx7200)/(96500)=0.4738g`
`therefore%` efficiency `=(0.3745)/(0.4738)xx100=79%`
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