In the given figure the electrolytic cell contains `1L` of an aqueous `1M` Copper `(II)` sulphate solution. If `0.4 ` mole of electrons passed through of cell, the concentration of copper ion after passage of the charge will be

Options

A. `0.4M`
B. `0.8M`
C. `1.0M`
D. `1.2M`

Answer

3

Explanation

Number of moles of `Cu^(2+)` discharged from anode `=` number of moles of `Cu^(2+)` deposited at cathode.