Copper Many of the metals that appear in the structure of boats are listed in th

Question

Copper

Many of the metals that appear in the structure of boats are listed in the table above. Which two metals should be kept away from each other as they will cause the biggest issue of galvanic corrosion? What are their two half reactions for the elements selected? Hint: You do not need to include the state, but you must include any charges.

-Fe and Zn

-Cu and Ni

-Ni and Zn

-Cu and Fe

-Zn and Al

-Cu and Al

-Fe and Al

-Fe and Ni

-Ni and Al

-Cu and Zn

Type of Metal Standard Reduction Potential

Copper

0.342 V Iron -0.04 V Nickel -0.257 V Zinc -0.762 V Aluminum -1.66 V

Explanation / Answer

Cu and Fe

In galvanic corrosion,Contact between the wrought-iron support and the outer copper skin amidst rainwater exposure has allowed the structure to gradually corrode.

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