A steel pipe can be protected from corrosion by attaching the pipe to a piece of magnesium becauseGroup of answer choicesmagnesium is inert.magnesium is more easily oxidized than iron.magnesium and steel form a corrosion resistant alloy.magnesium forms a tight oxide coating.
Question
A steel pipe can be protected from corrosion by attaching the pipe to a piece of magnesium becauseGroup of answer choicesmagnesium is inert.magnesium is more easily oxidized than iron.magnesium and steel form a corrosion resistant alloy.magnesium forms a tight oxide coating.
Solution
The steel pipe can be protected from corrosion by attaching it to a piece of magnesium because magnesium is more easily oxidized than iron.
Here's the step-by-step explanation:
-
Corrosion is a process that involves the oxidation of metals. In this case, the metal in question is the steel pipe.
-
Oxidation is a chemical reaction that involves the loss of electrons. When a metal is oxidized, it reacts with oxygen to form a new substance, often a type of rust or corrosion.
-
Magnesium is more reactive than iron (which is the main component of steel), meaning it will oxidize (lose electrons) more readily.
-
When the magnesium is attached to the steel pipe, it acts as a 'sacrificial anode'. This means that the magnesium will oxidize before the iron does.
-
As the magnesium oxidizes, it forms a layer of magnesium oxide. This layer acts as a barrier, preventing the iron in the steel pipe from coming into contact with oxygen and thus preventing it from rusting.
-
Therefore, the magnesium is 'sacrificed' to protect the steel pipe from corrosion. This is why magnesium is used to protect steel pipes from corrosion.
Similar Questions
Describe a corrosion protection method with proper cell reactions and a suitablediagram to protect an underground pipe line.
steels have excellent corrosion and oxidation resistance.Group of answer choices
Corrosion is the reaction of a metal to _____, commonly oxides, hydroxides, or sulfides. Group of answer choicesform a gasa more chemically stable formgenerate a protective layer
What is the best definition for ‘corrosion’?Damage to a metal by chemical reactions with substances in the environmentDamage to the shape of a metalProtection of a metal by coating it with a more reactive metalDamage to the protective coating surrounding a metal2Which of the following cause rusting? Oxygen and waterWater and heatCarbon dioxide and waterOxygen and heat3What is the chemical name for rust? Iron(III) oxideIron(III) hydroxideHydrated iron(III) oxideHydrated iron(II) oxide4Iron can be protected from rusting by coating it with various materials. Which of the following coatings is known as sacrificial protection? A more reactive metalPlasticPaintOil or grease5Which metal is used to galvanise iron? SteelZincAluminiumMagnesium6What is a disadvantage of sacrificial protection compared with other barrier methods? Very effectiveExpensive Can be used in harsh conditionsNo need to coat the whole surface of the metal
Why does aluminum (Al) metal not undergo corrosion like iron does?A Al does not easily react with oxygen.B Fe gives cathodic protection to Al.C A protective layer of Al₂O₃ forms on the surface of Al.D Al is more difficult to oxidize than Fe.E An electrical circuit cannot be completed on a surface of Al.
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.