Question

What weight of copper will be deposited by passing 2 Faradays of electricity through a cupric salt (Atomic weight of Cu = 63.5).

• A. 2.0 gm
• B. 3.175 gm
• C. 63.5 gm
• D. 127.0 gm

Answer 1

Answer: (C)

63.5 gm

Answer 2

$Cu^{2 +} + 2e^{-} \rightarrow Cu$

2 Faradays will deposit $= 1g\text{atomof}Cu = 63.5g$.