Save the ship from oxidation

Chemistry Level 1

The above is a galvanic sacrificial anode attached to the hull of a ship, showing corrosion. Cathodic Protection (CP), also referred to as a sacrificial anode, is a technique used to control the corrosion of a metal surface by making it the cathode of an electrochemical cell. Which of the following metals can protect this ship (iron) from oxidation?

Zinc ( Z n ) \text{Zinc } (\ce{Zn}) Tin ( S n ) \text{Tin } (\ce{Sn}) Nickel ( N i ) \text{Nickel } (\ce{Ni}) Lead ( P b ) \text{Lead } (\ce{Pb})

Lakshan Dumpa by Lakshan Dumpa , 24, India

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1 solution

Dharma Teja
Jul 22, 2014

zinc is more electropostive than iron so galvanising zinc with iron is used to control corrosion

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