Current Electricity Charging Discharging Of Capacitors Question 85
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
[J & K CET 2005]
Options:
A) 3.5 g
B) 2.8 g
C) 5.4 g
D) None of these
Show Answer
Answer:
Correct Answer: C
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 $
BETA
