Which, If Any, of the Following Metals Would Not Be

question 56

Multiple Choice

Which, if any, of the following metals would not be capable of acting as a sacrificial anode when used with iron E°_Fe = −0.44 V; all E° values refer to the M²⁺/M half-cell reactions.

• A)Manganese, Mn, E° = −1.18 V
• B)Cadmium, Cd, E° = −0.40 V
• C)Magnesium, Mg, E° = −2.37 V
• D)Zinc, Zn, E° = −0.76 V
• E)All of these metals are capable of acting as sacrificial anodes with iron.

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