The density of copper is `8.95 g mL^(-1)`. Find out the number of coulombs needed to plate an area of `100cm^(2)` to a thickness of `10^(-2)cm` using `CuSO_(4)` solution as electrolyte. `(` Atomic weight of `Cu=63.5g)`

Answer

`27172C`

Explanation

Mass of `Cu=Vxxd=(10xx10xx10^(-2)xx8.94)g=8.94g`
`CuSO_(4) overset(El ectrolysis)rarr Cu^(2+)+SO_(4)^(2-)`
`Cu^(2+)+2e^(-) rarr Cu`
`2e^(-)=2F=2xx96500C-=1 mol `of `Cu=63.5g`
`:. 63.5g `of `Cu` requires `-=2xx96500C`
`8.94g` of `Cu` requires `=(2xx96500xx8.94)/(63.5)C=27172.0C`