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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. |
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Answer» Correct Answer - C w=Zit `2=(197)/3 xx(ixx20xx60)/(96500)` [V.f for Au=3] i=2.448 amp. |
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