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A very thin copper plate is electro- pla...

A very thin copper plate is electro`-` plated with gold using gold chloride in `HCl`. The current was passed for `20 mi n`. And the increase in the weight of the plate was found to be `2g.[Au=197]`. The current passed was `-`

A

0.816 amp.

B

1.632 amp.

C

2.448 amp.

D

3.264 amp.

Text Solution

Verified by Experts

The correct Answer is:
C
w=Zit
`2=(197)/3 xx(ixx20xx60)/(96500)` [V.f for Au=3]
i=2.448 amp.
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