An electric current is passed through silver nitrated solution using silver electrodes . ` 10. 79 g` of silver qas found to be deposited on the cathode fi the same amount of electricity is passed through copper sulphate solutin using copper electrodes. the weihgt of copper deposited on teh cathode is .

Options

A. 6.4g
B. 2.3g
C. 12.8g
D. 3.2g

Answer

D

Explanation

`("Wt of Ag")/("Wt. of Cu")=("Eq. wt of Ag")/("Eq. wt. of Cu")`
`(10.79)/(m(Cu))-(107.9)/(63.5//2)`
(at mass of Cu=63.5, At, mass of Ag=107.0)
`m(Cu)=(10.79)/(107.9)-(63.5)/(2)=3.175g`