A) 1 mol of Cu
B) 0.5 mol of Mg
C) 9 g of Al
D) 5.6 1 of \[{{\text{O}}_{\text{2}}}\] gas at anode
Correct Answer: A
Solution :
According to Faradays law, 1 faraday electricity deposits 1 g equivalent of an element. 1 g equivalent of copper is half of its gram-molecular weight.
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