Question

In an electrolysis experiment, a current i passes through two different cells in series, one containing a solution of $CuSO_{4}$ and the other a solution of $AgNO_{3}$. The rate of increase of the weight of the cathodes in the two cells will be

• A. In the ratio of the densities of Cu and Ag
• B. In the ratio of the at. weights of Cu and Ag
• C. In the ratio of half the atomic weight of Cu to the atomic weight of Ag
• D. In the ratio of half the atomic weight of Cu to half the atomic weight of Ag

Answer 1

Answer: (C)

In the ratio of half the atomic weight of Cu to the atomic weight of Ag

Answer 2

As $\frac{m_{Cu}}{m_{Ag}} = \frac{E_{Cu}}{E_{Ag}} = \frac{\frac{1}{2}(\text{Atomic weight})_{Cu}}{(\text{Atomic weight})_{Ag}}$