Question

explain reverse electroplating with examples

Answer 1

Answer:

You run a current through a copper piece immersed in a solution of dissolved zinc.

By running a current through the copper anode and a (probably zinc) cathode, you cause electrons to combine with the dissolved zinc in a process called reduction. As dissolved zinc, Zn 2+ , reduces to metallic zinc, Zn, the zinc precipitates out of solution. In other words, the reduced zinc cannot stay dissolved anymore and becomes a solid.

Since the copper is the source of electrons, the zinc touching the copper piece will turn solid first, plating the copper. Voila, we have electroplating.

Answer 2

Answer:

To simplify reverse electroplating, it is called in the Electroplating industry as “stripping”. Hard electrodeposited metals , such as nickel and chromium are “stripped” in an acid bath using the reverse current. The acid bath will contain sheet lead which becomes the cathode. The anode is the electrodeposited article that requires the stripping ( de-plating).