Question

Why does a copper vessel shine again after scrubbing?
please give me ans in 4 to 5 sentence in urgently.

Answer 1

Because when we rubbing copper vessel then the layer of its oxide is removed .
So because of this copper vessel shine

Answer 2

The surface of copper becomes tarnished after reacting with moist carbondioxide present in the air and forms a layer of copper carbonate . When the copper vessel is scrubbed then this layer of copper carbonate gets removed and the vessel gains it shine again .
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