Is the ion reaction necessarily a metathesis reaction and a displacement reaction?

The types of reactions included in ionic reactions are:

1. Metathesis reaction, e.g. BaCO3+2H+=Ba2++ H2O + CO2

2. Redox reactions in solution (including displacement reactions), for example: ClO3 -+6H + 5Cl -=3H2O + 3Cl2

fe+cu^2+=fe^2++cu

3. Complexation reaction.

ag^﹢+2nh3 = [ag(nh3)2]^+

A reaction in which there are ions participating or ions forming in the reaction is called an ionic reaction. In secondary school, which is limited to reactions that are carried out in solution, it can be said that ionic reactions refer to a class of reactions in which electrolytes are involved in aqueous solutions. Because the reaction of the electrolyte in the aqueous solution is the reaction of the ions ionized by the electrolyte in the aqueous solution.

Metathesis and displacement reactions are not necessarily carried out in aqueous solution, so they are not necessarily ionic reactions.

Not necessarily, the correct statement is that the metathesis reaction must be an ionic reaction.

Some displacement reactions are not ionic reactions, such as CuO+H2=Cu+H2O.

The ionic reaction may also include some redox reactions, such as Cu+2NO3-+4H+=Cu2++2H2O+2NO2, etc.

No. Such as laboratory-produced chlorine.

MnO2 + 4H+ +2Cl- = Heating = Mn2+ +Cl2( )2H2O

Not necessarily!

Ionic reactions. Generally refers to chemical reactions involving strong electrolytes (substances that can be completely ionized in aqueous solutions).

For example: sodium carbonate.

and dilute hydrochloric acid reacts with CO3 2- +H+ = CO2 (gas) +H2O

Metathesis reaction.

If the reactants are all weak electrolytes, it cannot be called an ionic reaction!

Such as: acetic acid and copper hydroxide.

reaction, 2CH3COOH+Cu(OH)2===CH3COO)2Cu+2H2O

Acetic acid and copper hydroxide are both weak electrolytes and cannot be completely ionized, so it is mainly their molecular interactions!

Redox. Some ionic reactions in solution are due to redox reactions.

Reduces the concentration of certain ions of the reactants. Whether such reactions can occur depends on the oxidation and reducibility of the ions, and the principle of changing from strong to weak must be satisfied, that is, substances with weak oxidizing and reducing properties are generated from the properties of strong oxidation and reduction.

It mainly includes the displacement reaction with the participation of ions.

Redox reactions with other ions involved.

No. You have to grasp the essence of the displacement reaction. One element and one compound produce another element and another compound. So you can take a special example, the reduction of copper oxide by hydrogen. Although it is a displacement reaction, it is not an ionic reaction.

Ionic reaction: The reaction of electrolytes in solution is essentially a reaction between ions.

Displacement reaction: A chemical reaction in which an element reacts with a compound to form another element and compound.

Therefore, the displacement reaction is not necessarily an ionic reaction, such as 3Fe + 4H2O (G) = high temperature = Fe3O4 + 4H2

It is not the displacement reaction that takes place that must occur in solution that is an ionic reaction, such as a reaction in industrial ironmaking

c+2feo=2fe+co2

It's not an ionic reaction.

It is not, for example, the substitution of HCL with F2.

- Forgive me for my presumption, my former friend was very good and modest, but there was some one-sidedness. - The positive solution is: the metathesis reactions carried out in the solution are all ionic reactions, and the metathesis reactions that do not occur in the solution are not ionic reactions.

Examples of the latter are: 2NH4Cl(solid) + Ca(OH)2(solid) = 2NH3 +CaCl2 + 2H2O NaCl(solid) + H2SO4(concentrated) = NaHSO4 + HCl

<> displacement reaction, it must be a redox reaction.

Displacement reactions, redox reactions, all of which may be ionic reactions, or auspicious dust energy sources are not.

The displacement reaction is a chemical reaction in which an element reacts with a compound to form another element and compound; The metathesis reaction is a reaction in which two compounds exchange components with each other to produce two other compounds.

The displacement reaction can be expressed as A+BC=B+AC or AB+C=AC+B, and the displacement reaction is generally considered to be a redox reaction, but some special group reactions, such as the displacement between metal carbonyl compounds, are not redox reactions.

In addition, it can also refer to the displacement reaction between Lewis acids, where no elemental substances are required to participate in the reaction. (Source: Inorganic Chemistry (Fourth Edition) Volume II, Volume II, Volume 460, Line 3, 3rd Place:

It can displace another weaker lewis acid mnf4 from the stable ligand [mnf6]2-salt").

Metathesis is one of the four important types of chemical reactions, and it is also the core of the interaction between acids, alkalis, and salts.

That is: ab+cd=ad+cb

There is precipitation in the product or there is gas or water. This is a macroscopic phenomenon that can be observed, and the formation of precipitates, gases, or water will reduce the concentration of ions in the solution, and the reaction will proceed in the positive direction. Characteristics of metathesis reactions:

Compound reactants and products are compounds; phase exchange, in which reactants exchange components with each other; The valence does not change, and the valence of the reactants and products does not change.

First, the reference is different.

1. Displacement reaction: It is a chemical reaction in which a single substance reacts with a compound to form another element and a compound, which is one of the four basic reaction types in chemistry.

2. Metathesis reaction: It is one of the four basic reaction types. It is a reaction in which two compounds exchange components with each other to produce two other chemical carry-ons.

Second, the principle is different.

1. Displacement reaction: including the reaction between metal and metal salt, the reaction between metal and acid, etc. It is a reaction between an element and a compound to produce another element and another compound.

2. Metathesis reaction: It is the exchange of ions between two substances in the aqueous solution that occurs metathesis reaction, and combines them into substances that are difficult to ionize - precipitation, gas or weak electrolyte (the most common is water), so that the ion concentration in the solution is reduced, and the chemical reaction is carried out in the direction of the reduction of ion concentration.

Third, the characteristics are different.

1. Displacement reaction: The displacement reaction can be expressed as A+BC=B+AC or AB+C=AC+B, and it is generally considered that the replacement reactions are redox reactions, but some special reactions, such as the displacement between metal carbonyl compounds, are not oxidative blind vertical reduction reactions.

2. Metathesis reaction: Plasma is the combination of ions in the solution into substances that are difficult to ionize (such as water), insoluble substances (such as precipitation) or volatile gases, so that the metathesis reaction tends to be completed. In order to accurately determine the occurrence of metathesis reactions, it is necessary to memorize the solubility tables of common acids, alkalis, and salts, and use the solubility of substances correctly.

Displacement reaction is the reaction of one element and compound to produce another element and another compound.

Ionic reactions, which are generally carried out in solution.

So, when the displacement reaction takes place in solution, there is the ion equation. For example, iron reacts with copper sulfate to replace copper.

When the displacement reaction is not carried out in an aqueous solution, there is no ion equation. For example, hydrogen reacts with copper oxide to produce copper, and chlorine and hydrogen sulfide gas react to replace sulfur.

Not necessarily.

Only in solution, the displacement reaction that occurs between the electrolyte and the elemental is an ionic reaction.

It is not the displacement reaction that takes place that must occur in solution that is an ionic reaction, such as a reaction in industrial ironmaking

C+2FeO=2Fe+CO2 is not an ionic reaction.

It is not for example, C reduces Cuo, generates Co, Cuo, which is a displacement, but it is not an ionic reaction.