Why can t iron react magnesium out of magnesium oxide As the title Thank you

This is the order table of metal activity It is recommended to memorize it Potassium, barium, calcium, sodium, magnesium, aluminum, zinc, iron, tin, lead (hydrogen), copper, mercury, silver, platinum, k ba ca na, mg al zn fe sn pb (h) cu hg ag pt au As I said upstairs The higher the metal, the more active it is The stronger you can replace the weak one Got it You will definitely ask why h is bracketed I did it first Because hydrogen is not"Metals"Hydrogen is a gas at room temperature, and the order table says that hydrogen can be replaced with hydrogen before it, for example, Fe + H2SO4 = H2 + FeSO4 (iron + sulfuric acid = hydrogen + iron sulfate.

To add knowledge, Fe is 3-valent, but when it reacts with acid, it's 2-valent over

In the order of metal activity, the higher the metal, the more active it is! The metals in front (except potassium, calcium and sodium) can displace the metals in the back from their compound solutions! Metal chemicals must be soluble in water.

Here iron comes out behind magnesium, iron is not as active as magnesium, and magnesium oxide is not a solution. So it is impossible for iron to react with magnesium oxide! As for aluminum metal, aluminum has strong reducibility at high temperatures, and using this property of aluminum, it is possible to smelt certain metals with high melting points by reacting aluminum with molten metal compounds.

Normally, magnesium does not react directly with ferric chloride. However, in a heated aqueous solution, magnesium can chemically react with ferric chloride. The chemical reaction equation is as follows:

1. Magnesium reacts with hot water first: mg+2H2O=mg(OH)2+H2 (condition: heating).

2. The generated magnesium hydroxide reacts with ferric chloride: 3mg(OH)2+2FeCl3=2Fe(OH)3+3mgCl2

Summary. First of all, the green iron solution, the three iron ions in it are easily hydrolyzed to form iron hydroxide. Hydrogen ions are produced.

Magnesium reacts with ferric chloride solution to produce oxygen and why.

Hello, I'll probably tell you what the principle is.

First of all, the green iron solution, the three iron ions in it are easily hydrolyzed to form iron hydroxide. Hydrogen ions are produced.

Magnesium and hydrogen ions are then reacted to form hydrogen gas and magnesium ions.

The ferric chloride solution is acidic, and the magnesium is easy to react with the acid, but not with the iron ions of the Ninzano. FeCl3 + 3H2O = (reversible) = Fe (OH) 3 (precipitate) + 3HClM + 2HCl = = MgCl2 + H2 (gas) 3mg + 2FeCl3 + 6H2O = = 3 mgCl2 + 2Fe (OH) 3 (precipitation) + 3H2 (gas).

Fe2O3+6HCl=3H2O+2FeCl3, iron oxide refers to ferric iron, ferric oxide.

Reaction principle: Redox reaction, MG has strong reducing property, Fe2O3 has oxidizing property.

Chemical equation: 3mg+Fe2O3=High temperature=3mGo+2Fe

Note: This reaction is meaningless because Mg is more expensive than Fe, and Mg is not used to make FeGenerally, there is C, Co to reduce Fe2O3 to smelt Fe

The principle of hydrolysis is utilized.

Fe3+ +3H2O==Fe(OH)3 + 3H+ What we want to remove is Fe3+

The addition of MGO can consume H+, which makes the hydrolytic equilibrium move forward so that Fe3+ is all converted to Fe(OH)3

Moreover, MGO produces Mg2+ without introducing impurities.

The use of magnesium oxide to remove ferric chloride from magnesium chloride is actually the use of magnesium oxide to destroy the hydrolytic balance of ferric chloride.

The hydrolysis of ferric chloride produces hydrochloric acid, which reacts with magnesium oxide and decreases, causing the equilibrium to shift to the right, producing iron hydroxide precipitation, which is then filtered to remove the iron hydroxide.

Chemical Equation:

FeCl3+ +3H2O==Fe(OH)3+3HClMgo+2HCl==MgCl2+ +H2O ion equation:

fe3+ +3h2o==fe（oh)3+3h+mgo+2h+==mg2+ +h2o

Magnesium oxide depletes the hydrolytic equilibrium of trivalent iron in HCl, which is a positive shift in equilibrium.

The ferric iron is converted to iron hydroxide and removed.

Because magnesium hydroxide and ferric chloride react to form iron hydroxide precipitation, the reason is that the mixture of magnesium chloride and ferric chloride is acidic, so there are h ions in the solution, then h ions + mgo= mg2+ +h2o, so there are fewer h ions, relatively more -oh, and the degree of hydrolysis of iron ions is large, so hydrolysis into iron hydroxide precipitation, and excess magnesium oxide is filtered out to obtain pure magnesium chloride.

Magnesium chloride can also be formed by replacing iron.

After MGO encounters water, magnesium hydroxide will undergo a hydrolysis reaction, and the equilibrium constant K value is small. However, the OH generated by hydrolysis can precipitate with Fe3+ to obtain Fe(OH)3, and the hydrolysis of iron hydroxide is less than the hydrolysis of magnesium hydroxide, that is, the stability of iron hydroxide in water is greater, and as Fe3+ continues to become iron hydroxide precipitation, the hydrolysis balance of magnesium hydroxide continues to shift to the right, and finally when all Fe3+ is converted into precipitation, the hydrolysis of magnesium hydroxide reaches equilibrium.

At this point, only the generated iron hydroxide and excess magnesium hydroxide need to be filtered out to obtain pure magnesium chloride, and no other impurity ions are introduced in this process.

The principle of hydrolysis is utilized.

fe3+3h2o==fe（oh)3

3H+What we want to remove is Fe3+

The addition of MGO can consume H+, which makes the hydrolytic equilibrium move forward so that Fe3+ is all converted to Fe(OH)3

Moreover, MGO produces Mg2+ without introducing impurities.

Because magnesium hydroxide and ferric chloride react to form iron hydroxide precipitation, the reason is that the mixture of magnesium chloride and ferric chloride is acidic, so there are h ions in the solution, then h ions + mgo= mg2+ +h2o, so there are fewer h ions, relatively more -oh, and the degree of hydrolysis of iron ions is large, so hydrolysis into iron hydroxide precipitation, and excess magnesium oxide is filtered out to obtain pure magnesium chloride.

Iron chloride Magnesium oxide reacts with water to form iron hydroxide Magnesium chloride Iron hydroxide is removed by filtration.

In the solution, Fe3+ is relatively acidic, which can dissolve the MGO

2fe3+ +3mgo + 3h2o = 2fe(oh)3↓ +3mg2+

Due to the acidic nature of the ferric chloride solution, magnesium is easy to react with acids and does not undergo redox reactions with iron ions.

FeCl3 + 3H2O = (reversible Nianye) = Fe (OH)3 (precipitation) + 3HCl

mg+2HCl==mgCl2+H2 (gas)3mg+2FeCl3+6H2O==3mgCl2+2Fe(OH)3 (precipitation)+3H2(gas)Ayer.