Question
Copper can be electroplated at the cathode of an electrolysis cell by the half-reaction. Cu2+(aq)+2e??Cu(s) How...
Copper can be electroplated at the cathode of an electrolysis
cell by the half-reaction.
Cu2+(aq)+2e??Cu(s)
How much time would it take for 321mg of copper to be plated at a current of 7.1A ?
Express your answer using two significant figures.
Homework Answers
Answer #1
We know that 
Where W = mass of metal deposited = 321 mg = 321x10-3 g
E = Equivalent weight of Cu = 63.54 / 2 = 31.77
C = current = 7.1 A
t = time taken = ?
Plug the values we get 
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