Question: The chemical equivalent of copper and zinc are 32 and 108 respectively. When copper and silver volta...

Question

The chemical equivalent of copper and zinc are 32 and 108 respectively. When copper and silver voltameter are connected in series and electric current is passed through for sometimes, 1.6 g of copper is deposited. Then, the mass of silver deposited will be

Answer 1

Solution

From Faraday’s law, m/E = constant

where m = mass of substance deposited,

E = chemical equivalent.

$\therefore\frac{m_{2}}{m_{1}} = \frac{E_{2}}{E_{1}} \Rightarrow m_{2} = \frac{108}{32} \times 1.6 = 5.4g$