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

Answer

C

Explanation

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