Electroplating : Mass of Copper and Silver on a Strip
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Copper metal can reduce silver ions to metallic silver. The copper is oxidized to copper ions according to the reaction
2Ag^+(aq) + Cu(s) --> Cu^2+(aq) + 2Ag
A copper strip with a mass of 2.00 g is dipped into a solution of AgNO3. After some time has elapsed, the copper strip is coated with silver. The strip is removed from the solution, dried, and weighed. The coated strip has a mass of 4.18 g. What are the masses of copper and silver metals in the strip? (Hint: Remember that the copper metal is being consumed as silver metal is formed.)
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Solution Summary
It shows how to calculate the mass of copper and silver on a strip by using electroplating.
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2Ag^+(aq)+Cu(s) -->Cu^2+(aq) + 2Ag
Initial 2.00 g 0
Final 2.00 -x ...
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