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.
Yes, aluminum is more electronegative than magnesium thus, resulting in a single displacement reaction. The products would be magnesium + aluminumnitrate
negative
Yes. Magnesium oxide will react with water to form magnesium hydroxide.
You would observe precipitation of magnesium hydroxide.
6g
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.
No, magnesium and sulfur would not form an ionic compound because they are both nonmetals. Ionic compounds are formed between a metal and a nonmetal. Magnesium and sulfur would likely form a covalent compound instead.
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.
I would protect my family by telling them to go out instead of just sitting in the house and their house would colapse.
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.
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
No, H2O plus Mg does not form a mixture. Mixing water (H2O) with magnesium (Mg) would not result in a homogenous combination of substances. Instead, the magnesium would likely react with the water, producing magnesium hydroxide (Mg(OH)2) and hydrogen gas (H2).
Yes, aluminum is more electronegative than magnesium thus, resulting in a single displacement reaction. The products would be magnesium + aluminumnitrate
If Geiger and Marsden had used magnesium foil instead of gold in their famous scattering experiment, they would have observed less scattering due to the lighter mass and lower atomic number of magnesium compared to gold. This would have resulted in the alpha particles penetrating the foil with less deflection, leading to different conclusions about the structure of the atom.
You would just call it liquid magnesium, or molten magnesium which means the same thing.
No, magnesium (Mg) and oxygen (O) typically do not form covalent bonds. Instead, they are more likely to form ionic bonds due to their large difference in electronegativity. In an ionic bond, magnesium would donate electrons to oxygen, resulting in the formation of magnesium oxide (MgO).
magnesium chloride