What is the equation for the chemical reaction of metals and non metals to form salts?

Metallic and non-metallic chemical reactions3Fe+202=Fe3O4 (condition is ignition).

Decomposition reactions. None (A decomposition reaction is when one substance reacts to produce more than one substance, so the reaction of two substances cannot be a decomposition reaction.) ）。

Metathesis reaction.

None (no metathesis reaction between metals and non-metals).

Displacement reaction. Zn+2HCl=ZnCl2+H2 (H2 has an upward gas sign).

It is generally composed of metal ions and non-metal ions, the most common being sodium chloride.

Calcium nitrate, ferrous sulfate.

Wait. Table salt contains barium salts and chlorides.

Magnesium, lead, arsenic, zinc, sulfate.

and other impurities. We stipulate that the barium content should not exceed 20mg kg. Excessive magnesium and calcium content in table salt can make the salt bitter, and high fluoride content can also cause poisoning.

In recent years, many trials have confirmed that salt intake is associated with high blood pressure.

There is a certain relationship between the incidence and excessive intake of salt in the diet, which can cause hypertension.

In order to eliminate the harm of iodine deficiency and protect the health of citizens, the state adopts long-term iodized salt (hereinafter referred to as iodized salt) to eliminate the harm of iodine deficiency.

comprehensive prevention and control measures.

You've only given you a general formula, so let's give an example.

2fe+3cl2=2fecl3

Generally, it is required that the metal has strong reducibility, and the oxidation of non-metal must be strong.

Generally, non-metals are commonly combined with halogen elements such as chlorine and bromine, or more active non-metallic elements such as sulfur elements. But it does not include oxygen, because oxygen forms oxides.

An example of the chemical equation for adding salt to a metal is as follows:

1、mg+feso4=mgso4+fe

2、fe+2fecl3=3fecl2

3、al+fecl3=fe+alcl3

4、fe+cuso4=feso4+cu

5、cu+2agno3=cu（no3）2+2ag

6、zn+cucl2=zncl2+cu

7、zn+2agno3=zn（no3）2+2ag

The chemical equations for the reaction between metals and salts in the junior high school common examination are:

fe+cuso4=cu+feso4

cu+2agno3=2ag+cu（no3）2

Elemental metal + salt = another metal + another salt.

The reaction of a metal and a salt solution results in the formation of another metal and another salt, and a displacement reaction occurs.

For: Elemental metal + salt (solution) = = another metal + another salt (displacement reaction).

1. Iron and copper sulfate reaction: Fe+Cuso ==Cu+Feso

Phenomenon: Iron can react with copper sulfate to form ferrous sulfate.

and copper, a solution of copper sulfate.

It is blue, the color of ferrous sulfate solution is light green, the resulting copper covers the surface of iron, and the solution gradually changes from blue to light green. Closed to old age.

2. Put the aluminum sheet into the copper sulfate solution: 2AL+3CUSO4 AL2(SO4)3+3CU

Phenomenon: Aluminum cavities can react with copper sulfate to form aluminum sulfate.

and copper, the color of the aluminum sulfate solution is colorless, and the generated copper covers the surface of the aluminum, and the solution gradually changes from blue to colorless.

3. Put the copper sheet into silver nitrate solution: 2AGno +Cu==Cu(NO) 2AG

Phenomenon: Silver nitrate solution is colorless, copper nitrate.

The solution is blue, and the resulting silvery-white substance covers the surface of the copper. The solution gradually changes from colorless to blue.

1. Alkali can react with some non-metal oxides to form salts and water. Carbon dioxide.

Sodium carbonate is formed with sodium hydroxide.

and water, the chemical equation of the reaction is: CO2 + 2NaOH Na2CO3 + H2O.

2. Carbon dioxide and calcium hydroxide.

Sodium calcium carbonate and water are generated, and the chemical equation of the reaction is: CO2 + Ca(OH)2 CaCO3 + H2O.

3. Sulfur trioxide reacts with sodium hydroxide to form sodium sulfate and water, and the chemical equation of the reaction is: 2NaOH + SO3 Na2SO4 + H2O.

When you say non-metallic, do you mean non-metallic elemental substances? If yes, please let me know in the question supplement and I can now.

Metals and non-metals.

Synthesis reaction 3Fe+202=Fe3O4 (Condition is ignition) Decomposition reaction None (Decomposition reaction refers to the reaction of one substance to form multiple substances, so the reaction of two substances cannot be a decomposition reaction. The same hereinafter).

Metathesis reaction.

None (no metathesis reaction between metals and non-metals).

Displacement reaction Zn+2HCl=ZnCl2+H2 (H2 has an upward gas sign) non-metal and non-metal.

Chemical reaction 2H2 + O2 = 2H2O (condition is ignition) Decomposition reaction None.

Metathesis reaction.

There is no displacement reaction.

No acids or salts.

Chemical reaction None.

Decomposition reaction None.

Metathesis reaction.

HCl+AGNO3=AGCL+HNO3 (AGCL has a downward precipitation sign) displacement reaction None.

Acids and non-metals.

Chemical reaction None.

Decomposition reaction None.

Metathesis reaction.

There is no displacement reaction.

Free of acids and bases.

Chemical reaction None.

Decomposition reaction None.

Metathesis reaction.

hcl+naoh=nacl+h2o

Displacement reaction: None.

Alkalis and non-metals.

Chemical reaction None.

Decomposition reaction None.

Metathesis reaction.

There is no displacement reaction.

No alkali or metal.

Chemical reaction None.

Decomposition reaction None.

Metathesis reaction.

None Displacement reaction: None.

Metals and non-metals.

Chemical reaction: 3Fe+202===Fe3O4;

2mg+o2===2mgo；

4al+3o2===2al2o3；

2zn+o2===2zno。

Displacement reaction: nanoosmosis.

zn+2hcl=zncl2+h2；

2al+6hcl===2alcl3+3h2。

Non-metallic vs. non-metallic.

Chemical reaction: 2H2 + O2 = 2H2O (condition is ignition) Compound division and solution reaction:

HCl+AGNO3=AGCL+HNO3 (AGCL has a directional hole to talk about the subridge precipitation symbol).

Metathesis reaction.

hcl+naoh=nacl+h2o

2Na+ Cl2 = Ignite Macro = 2NaCl2Na + S = Ignite Shielding = Na2S

Cu + Cl2 = Ignition = CuCl2

Wait, dismantle, etc.

The metal and salt reaction is a chemical equation that can be expressed as: m + ncl ->mcl + n.

where M stands for metal, N for nitrogen, Cl for chlorine, and MCL and N for metal chloride and nitrogen, respectively. Taking the reaction of iron and copper sulfate as an example, the reaction equation is: Fe + CuSO4 -> FeSO4 + Cu.

In this reaction, iron reacts with copper sulfate to form ferrous sulfate and copper. During the reaction, copper ions are separated from copper sulfate and react with iron to form copper, which in turn becomes ferrous ions.

The reaction of metal and salt can also be the reaction of aluminum flakes into copper sulfate solution, and the reaction equation is: 2Al + 3CuSO4 ->Al2(SO4)3 + 3Cu. In this reaction, aluminum reacts with copper sulfate, resulting in aluminum sulfate and copper.

Similar to the previous reaction, copper ions detach from copper sulfate and react with aluminum to form copper, which in turn becomes aluminum ions. The metal and salt reaction is a reversible reaction.

That is, reactants can be turned back into products. For example, in the reaction of copper and silver nitrate, the reaction equation is: Cu + AgnO3 ->Cu No3 2 + AG.

In this reaction, copper reacts with silver nitrate to produce copper nitrate and silver. If the resulting silver is heated, it becomes silver elemental again, while copper nitrate becomes copper and nitric acid.

Features of the chemical equation for the reaction of metals and salts:

1. Displacement reaction.

The metal and salt reaction is a displacement reaction in which one metal or hydrogen replaces another. In the reaction process, the metal or hydrogen is replaced by another element, and a new substance is formed.

2. The role of salt.

Salt plays an important role in the reaction between metals and salts. The metal ions in the salt react with the metal to form a new metal and a new salt. The aluminum sheet is put into the copper sulfate solution, and the aluminum reacts with the copper ions in the copper sulfate and reacts with the metal to form a new substance.

3. Reversible reaction.

The metal and salt reaction is a reversible reaction, that is, the reactants can be turned back into products. For example, copper reacts with silver nitrate to form copper nitrate and silver, and if the resulting silver is heated, it becomes silver elemental again, while copper nitrate becomes copper and nitric acid.