A current of 2.68 A is passed for 1.0 hr through an aqueous solution of`CuSO_(4)` using copper electrodes. Which of the following statement(s) is (are) correct?

Options

A. increase in mass of cathode=3.174 g
B. decrease in mass of anode=3.174 g
C. no change in masses of electrodes
D. the ratio between the change of masses of cathode and anode is 1:2

Answer

A,C

Explanation

`{:("At Cathode:"Cu^(2+) + 2e^(-) to Cu(S)),("At Anode:"Cu(s) to Cu^(2+)+2e^(-)):}`
Increase in mass of cathode = decrease in mass in Anode =`(2.68xx3600)/96500xx63.5/2=3.174 g`