A current of `2` A was passed for `1 h` through a solution of `CuSO_4. 0.237g` of `Cu^(2+)` ions was discharged at cathode . The current efficiency is .

Options

A. ` 42. 2%`
B. ` 26 .1%`
C. ` 10%`
D. ` 40.01 %`

Answer

C

Explanation

` W= ( 63.5)/(2xx 96500) xx 2 xx 60 xx 60= 2 37 g`
`%` of efficlency `= (0. 237)/(2.37) xx 10%`.