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

Options

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

Answer

A, B

Explanation

At cathode: `Cu^(2+)+2e^(-)toCu(s)`
at anode: `Cu(s)toCu^(2+)+2e^(-)`
Increase in mass of cathode `=` decrease in mass of anode`=(2.68xx3600)/(96500)xx(63.5)/(2)=3.174g`.