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Why would you use zinc instead of magnesium to protect iron from rusting?
Wiki User
∙ 10y ago
In this application the coating metal sacrifices itself to protect the underlying metal. The coating metal needs to have only a slightly higher reactivity than the metal it is protecting. Otherwise it will be used up prematurely. The "half-reaction potential" for metallic zinc is about -0.76 volts, that for magnesium about -2.37.
Current prices for zinc are around US$1800 per metric tonne and for magnesium around US3300. A higher price would only exacerbate the effect of faster loss.
Wiki User
∙ 10y ago
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Would magnesium nitrate react with magnesium?
Yes, aluminum is more electronegative than magnesium thus, resulting in a single displacement reaction. The products would be magnesium + aluminumnitrate
Would calcium be more chemically similar to potassium or to magnesium?
Magnesium
If 2 electrons were removed from magnesium what would the charge on magnesium be?
negative
Would magnesium oxide make an alkali?
Yes. Magnesium oxide will react with water to form magnesium hydroxide.
What is the formula of of magnesium oxide?
== == MgO That would be Magnesium rust. It makes Magnesium off color and cloudy.
Why do you apply paint to iron articles?
Paint can protect iron from rusting, especially if it is the right kind of paint - you would not want to use a water based acrylic paint, since the water in the paint would promote rusting, rather than preventing it.
Will copper replace magnesium in compounds?
Not by electromotive action; magnesium would replace copper instead. However, a divalent copper cation conceivably could replace a divalent magnesium ion in a complex mineral such as a silicate or aluminate.
How do you protect my family during an earthquake?
I would protect my family by telling them to go out instead of just sitting in the house and their house would colapse.
Should a katana ordered online have oil on the blade when it arrives?
Blades have oil on them to protect from rusting. Rust is a reaction between the metal an oxygen in the air. I would fully expect the blade to have some amount of oil on it to protect it.
What are the conditions necessary for rusting?
The conditions necessary for rusting are water (or water vapour) and air, specifically Oxygen. If one condition is absent and the other is present then rusting would not occur but if both are present then rusting will occur
How many electrons does Magnesium need to complete the last shell?
A magnesium atom would need 6 electrons to complete its highest occupied electron shell. In practice, a magnesium atom almost never does this, because the energy required would be too great. Instead, the magnesium atom transfers 2 electrons to one or more atom that are more electronegative than magnesium and thereby forms a magnesium ion with an electrical charge of +2. In this ion, the highest occupied shell of a magnesium atom is completely empty of electrons.
Would magnesium nitrate react with magnesium?
Yes, aluminum is more electronegative than magnesium thus, resulting in a single displacement reaction. The products would be magnesium + aluminumnitrate
Why does Mg3N2 form in insufficient air?
Magnesium nitride (Mg3N2) is formed by the reaction of magnesium metal (Mg) with nitrogen gas (N2).
Can potassium chloride solution slow down rusting?
No, since KCl is an electrolyte a solution of it would most likely speed up rusting.
What element would be the most different from magnesium?
Na would be the most different from Magnesium.
Would calcium be more chemically similar to potassium or to magnesium?
Magnesium
What would hydrochloric acid do if it came in contact with magnesium?
magnesium chloride
