What is the current efficiency of an electro deposition of Cu metal from `CuSO_(4)` solution in which 9.80 g copper is deposited by the passage of 5A current for 2h?

Options

A. 0.5
B. 8.528
C. 0.414
D. 1

Answer

B

Explanation

`("weight")/("equivalent weight") =("it")/(96500)`
`(9.8) /(63.5//2) =(ixx2xx60xx60)/(96500) rarr I = 4.14 A`
`therefore` current efficiency `=("Theoretical value of I")/("pratical value of I") xx100`
`=(4.41 )/(5)xx100=82.8 %`