What are the chemical properties of Mg in chemistry and write a related equation for each?

MG burns and emits a dazzling white light to produce magnesium oxide. Oxidation reaction: 2mg+O2=2mgo2

Reaction with acid: mg+2HCl=mgCl2+H2Grignard reagent) Magnesium belongs to alkaline earth metals, and the hydrate of its oxide is alkaline (although precipitate) and is oxidized by burning in the air and emitting intense light and volatile electrons. Magnesium is chemically reactive, and it can react directly with oxygen in the air to produce a large amount of heat.

Reacts with hot water to form hydrogen MgCO3 mgo + CO2mgo + C + Cl2 mgCl2 mgCl2 mg + Cl2

Magnesium can also be prepared by the method of thermal reduction of magnesium oxide. In addition, magnesium chloride extracted from seawater can be dehydrated, and potassium chloride can be added for melting electrolysis.

Reaction with O2 and other non-metals 2mg + O2 = 2 mgo 3 mg + N2 = Mg3N2

2.With some oxides 2mg + CO2 = 2mgo + c3React with water mg + 2h2o = mg(oh)2 + h2 cold water is slow, boiling water is fast).

4.Reaction with acid mg + 2H+ = mg2+ +H2

Magnesium has strong reducing properties and is prone to loss of electrons in the reaction. mg+2hcl=mgcl2+h22mg+co2=2mgo+c

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Magnesium burns (reacts with oxygen) in the air

2mg+o2=ignition excavation===

2MGO reaction with nitrogen)

3mg+n2==ignition==

Reaction of Mg3N2 with carbon dioxide).

2mg+CO2==ignition==

2mgo+c

Magnesium with chlorine. The judgment of the imitation reaction mg + cl2 = = ignition = = mg cl2 mg and water reaction mg + 2h2o = = = mg (oh) 2 + h2

Reaction of magnesium with hydrochloric acid mg+2HCl===

mgcl2+h2↑

Magnesium with hydrogen ions.

The reaction of mg+2h+==

mg2++h2↑

Reaction of trimagnesium dinitride with water Mg3N2 + 6H2O ===3mg(OH)2 +2NH3

Magnesium with bromine water. (color fading).

mg+br2===

mgbr2 produces bubbles).

mg+2hbr===

mgbr2+h2↑

Magnesium and its compounds.

1. The properties of magnesium.

1) Physical properties: Magnesium is a silvery-white metal, soft, density, light metal, and low hardness.

2) Chemical properties: Magnesium is a more reactive metal.

Reaction with non-metal: 2mg + O2 ==2mgo, mg + Cl2 ==mgCl2, 3mg + 3N2 ==mg3N2, etc.

Reaction with boiling water: mg + 2H2O (boiling water) = = mg (OH)2 + H2

Reaction with acid: reaction with non-strong oxidizing acid: H+ in acid reacts with mg, and H2 is released.

Reaction with strong oxidizing acids: such as concentrated H2SO4 and HNO3, the reaction is more complicated, but no H2 is released.

Reaction with some salt solutions: such as CuSO4 solution, FeCl2 solution, FeCl3 solution, etc.

mg + 2fecl3 ==2fecl2 + mgcl2, mg + fecl2 ==fe + mgcl2.

2. Magnesium extraction.

Seawater contains a large amount of MgCl2, so MgCl2 is mainly extracted from seawater with isolated NaCl

Process: Add CAO or Ca(OH)2 mg(OH)2 precipitation, filter, wash and precipitate in seawater, dissolve MgCl2 solution with dilute HCl, evaporate lead crystal elimination and reflux MGCL2 6H2O crystals, heat MGCL2 solid in HCl gas environment, and electrolyze molten MgCl2 mg + Cl2.

Main reactions: MgCl2 + Ca(OH)2 ==mg(OH)2 + CaCl2, Mg(OH)2 + 2HCl ==MGCl2 + 2H2O, MgCl2 6H2O MGCL2 + 6H2O, MgCl2(melting) MG+Cl2.

3. The use of magnesium.

Magnesium is mainly widely used in the manufacture of alloys. The alloys manufactured are both harder and stronger. Therefore, magnesium alloy is widely used in rockets, missiles, aircraft and other manufacturing industries.

4. Magnesium oxide (MGO).

White solid, high melting point (2800), is a high-quality high-temperature resistant material (refractory material). It is an alkaline oxide.

mgo + h2o ==mg(oh)2, mgo + 2hcl ==mgcl2 + h2o 。

Pay attention to the writing of ionic equations in the following cases:

1）n(mg(hco3)2):n(naoh)＝1:4：mg2+ +2hco3- +4oh- =mg(oh)2↓+ 2co32- +2h2o；

2)n(mg(hco3)2):n(naoh)=1:2：mg2+ +2hco3- +2oh- =mgco3↓+ co32- +2h2o；

3)n(mg(hco3)2):n(naoh)=1:1： mg2+ +hco3- +oh- =mgco3↓+h2o

mg+2HCl=mgCl2+H2 (up arrow).

mg+cucl2=cu+mgcl2

mg+cl2=mgcl2 (the condition point is only and the ignition refers to the shed).

+)2H2O + 2E = H2 +2OH --)AL - 3E + 4OH = AL(OH)4]- (can also be written as ALO2-).

I don't know if the electron gain and loss are required to be equal, if it is required, the positive electrode reaction coefficient is multiplied by 3, and the negative electrode is multiplied by 2.

Or: Total reaction: 2al+2naoh+2h2o=2naalo2+3h2 anode:

2Al-6E-+4OH-=2ALO2-cathode: 6H2O+6E-=6OH-+3H2 In NaOH solution, Al can react as a negative electrode, but Mg cannot react as a positive electrode.

Potassium, sodium, magnesium, calcium, aluminum, etc. are all more active median plexus metals, which have the following chemical properties.

1.Reaction with non-metallic elements:

2mg+o2=2mgo

3mg+n2=mg3n2

Point cultivation hunger) 2Reaction with water:

mg+2H2O=mg(OH)2+H2 (Heating and Sakura)3Reaction with acid: mg+2HCl=mgCl2+H2mg+H2SO4=mgSO4+H2

4.Reaction with oxide: 2 mg + CO2 = 2 mgo + c (ignition) 5Reaction with air: 2mg + O2 = 2MGO (ignition) 2mg + CO2 = 2MGO + C (ignition).

3mg+N2=mg3N2 (ignition).

（1）ch4+2o2=co2+2h2o

2) If the above reactant reaction does not seem to meet the requirements, will the reaction you want be?

2mg+o2=2mgo