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Chemistry, 07.05.2020 02:58 snikergrace

To afford cathodic protection to an iron object, a metal must be to reduce (have a more reduction potential) than F e 2 + .

The E r e d ∘ for C d 2 + is , while the E r e d ∘ for F e 2 + is . Therefore, the coating of cadmium protect iron by cathodic protection.

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