why coating of zinc on iron is called sacrificial anode????
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In cathodic protection, pieces of metal (known as Sacrificial Anode) are linked electrically to the ship’s hull. These anodes, are made of metals more reactive than the material used for the ship’s body and systems. As such, they will corrode in place of the ship’s body and systems while the ship stays protected, giving rise to the name ‘Sacrificial Anodes’.
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