Question

Answer these with explanation.

[ Taken from Ch-15 ( Chemical effects of electric current) ]​

Answer 1

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1. Gold and copper are examples. They are coated over another metals to get brightness,prevent corrosion,longevity etcc..

2. Most liquids that conduct electricity are solutions of acids, bases and salts. The passage of an electric current through a conducting liquid causes chemical reactions. The resulting effects are called chemical effects of currents.

Electroplating is one of the most popular methods employed to achieve corrosion control. Electroplating entails the electrodeposition of a metal onto the surface of a steel or iron product. This metal coating acts as a sacrificial barrier that can slow and even prevent corrosion from forming on the underlying material, which is referred to as the substrate. While zinc is frequently the metal of choice to provide corrosion protection, a zinc-nickel alloy such as the one offered by Sharretts Plating Company tends to produce better long-term results

than when coating with zinc alone. In fact, zinc-nickel is a top choice for corrosion protection in the automotive industry.