The standard reduction potentials fo Co^2+ and Fe^2+ are -0.28 V And -0.44 V res

Question

The standard reduction potentials fo Co^2+ and Fe^2+ are -0.28 V And -0.44 V respectively. An iron object is plated with a coating of cobalt to protect against corrosion. Is the folk statement true or false ? The Cobalt protects the iron by cathodic protection The standard reduction potentials fo Co^2+ and Fe^2+ are -0.28 V And -0.44 V respectively. An iron object is plated with a coating of cobalt to protect against corrosion. Is the folk statement true or false ? The Cobalt protects the iron by cathodic protection

Explanation / Answer

for cathodic protection --> the protector must have LOWER reducitno potential, so it oxidizes first

then

Co2+ = -0.28 > Fe+2 = -0.44

then, the statement is FALSe,

Fe will be oxidized and Co(s) will remain formed

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