Sunday, May 16, 2010

Chemistry Problem (2)


(figure was taken from self-teaching physics and chemistry guide to Dr. I. Abbas and Dr. A. Shaar)
The figure above corresponds to an electroplating sketch. We wish to coat the spoon with Silver.
a) How is energy converted in this cell? What do we call such cells?
b) Label the parts figure from (1) to (6).
c) To which pole of the battery is the anode connected? To which pole of the battery is the cathode connected?
d) The following solutions are available: AgNO3(aq) – CuSO4(aq) - Au(NO3)3(aq)Which solution is suitable to be used in the cell? Why are the other two solutions not suitable?
e) We electroplate objects for 2 purposes. What are they?
f) Write the oxidation and reduction half reactions involved in this process and write the overall redox reactions.

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