Which of the following metals can be used to protect iron from corroding? Pb2+(aq) + 2 e- → Pb(s) Eo = -0.126 V Fe2+(aq) + 2 e- → Fe(s) Eo = -0.447 V Mg2+(aq) + 2 e- → Mg(s) Eo = -2.37 V Select one: a. both Pb and Mg b. Pb c. Mg d. neither Pb nor Mg
Science behind corrosion-test
Corrosion is defined as an activity that transforms refined metals into more chemically stable forms such as oxide, hydroxide, carbonate, or sulfide. It refers to the slow decomposition of things (typically metals); thanks to chemical and/or electrochemical reactions with their surroundings. Corrosion engineering is the science of preventing and controlling corrosion.
Corrosion
Corrosion is defined as an activity that transforms refined metals into more chemically stable forms such as oxide, hydroxide, carbonate, or sulfide. It refers to the slow decomposition of things (typically metals); thanks to chemical and/or electrochemical reactions with their surroundings. Corrosion engineering is the science of preventing and controlling corrosion.
Which of the following metals can be used to protect iron from corroding?
Pb2+(aq) + 2 e- → Pb(s) Eo = -0.126 V
Fe2+(aq) + 2 e- → Fe(s) Eo = -0.447 V
Mg2+(aq) + 2 e- → Mg(s) Eo = -2.37 V
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