Q. Two electrolytic cells containing ${CuSO}_{4}\ \ and\ AgNO_{3}$ respectively are connected in series and a current is passed through them until 2 mg of copper is deposited in the first cell. The amount of silver deposited in the second cell during this time in approximately (atomic weight of copper and silver are 63.6 and 108.0 )
A) 1.7 mg
B) 3.4 mg
C) 5.1 mg
D) 6.8 mg
Explanation
(d) $m_{Ag} = m_{Cu} \times E_{Ag}/E_{Cu}$
$= 2 \times 108/(63.6$/2) = 6.8 $\ mg$.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.