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Using the E^@ values of A and B, predict...

Using the `E^@` values of A and B, predict which one is better for coating the surface of iron `[E^@(Fe^(2+)/Fe=-0.44V]` to prevent corrosion and why?
Given: `E^@(A^(2+)|A)=-2.37V` and `E^@(B^(2+)|B)=-0.14V`.

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