Conditions of ionization in chemical equations, what is the ionization equation?

Ionization occurs when it is released in water or heated and melted, but remember, you must not write the conditions when writing chemical equations. Ionization, just write an equal sign.

The ionization equation is: NaCl=Na++Cl-, CH3CoonH4=CH3COO-+NH4+.

The strong electrolyte is completely ionized in aqueous solution, and the ionization equation is written with the symbol "=" when writing the ionization equation for poorly soluble cherry cavity and slightly soluble strong electrolyte"="Some electrolytes are written differently depending on the conditions.

1. The strong electrolyte is completely ionized in the aqueous solution, and the symbol "=" is used when writing the ionization equation, for example: NaCl=Na++Cl-, CH3CoonH4=CH3COO-+NH4+.

2. Use the symbol "=" when writing the ionization equation of poorly soluble and slightly soluble strong electrolytes "" "For example:

baso4=ba2++so42-，ca（oh）2=ca2++2oh-，baso4（s）⇌ba2+（aq）+so42-（aq），ca（oh）2（s）⇌ca2+（aq）+2oh-（aq）。

3. Some electrolytes are written differently due to different conditions. For example, when melting, khso4=k++hso4-; In aqueous solution: KhSO4=K++H++SO42-.

4. The weak electrolyte is partially ionized in aqueous solution, and the ionization equation is written with the symbol " "For example, CH3COOH CH3COO-+H+, NH3·H2O NH4++OH-.

5. The ionization of multiple weak acids in aqueous solution is carried out step by step, and it is required to write the ionization equation step by step, and there are several levels of ionization equation for several yuan acids. For example, H2CO3 H++HCO3-, HCO3- H++CO32-.

The ionization of multiple weak bases in aqueous solution is more complicated, so the ionization equation of multiple weak bases is generally written in one step, but still the spine hail shirt is still marked with the symbol " "For example, Cu(OH)2 Cu2++2OH-.

6. The acid salt of weak acid is a strong electrolyte, and the first step in water is to completely ionize cations and acid ions of weak acid, and the acid ions of weak acid can be ionized, and it is a reversible process. For example, the ionization equation for NaHCO3 in aqueous solution is: NaHCO3=Na++HCO3-, HCO3- H++CO32-.

To put it simply, it is the process by which an electrolyte produces freely moving ions in an aqueous solution or in a molten state.

The formula that represents the ionization process with chemical formulas and ion symbols is called the ionization equation, which represents the chemical equation that ionizes into ions when a substance is dissolved in water. The number of charges carried by ions can generally be judged by their valency in the compound. The total number of positive charges carried by all cation bands is equal to the total number of negative charges carried by all anions.

For example: mgcl2 = mg2+ +2cl-

naoh=na+ +oh-

In the above equation, the absolute values of the total positive charge of the cation and the total negative charge of the anion are equal.

The ionization equation of NaOH is as follows: NaOH = = Na++ OH - The ionization equation of SO2: 2SO2 = reversible = SO32 - + SO2 + O explicit -2 valence, S explicit +4 valence, so it is SO2 +).

This is self-coupling ridge teasing ionization.

Where it is not rotten and rough to understand, it can be sold by Sakura to continue to ask.

Writing the correct chemical formula of a substance is the basis for writing the ionization equation correctly.

It is necessary to write the symbols of ionized cations and anions correctly. Here it is important to distinguish between the writing of the ion symbol and the valency. The number of charges carried by the ions should be marked in the upper right corner of the element symbol, and the number should be written first, followed by the "+" or "" sign; The valence mark is written directly above the element symbol, with a "+" or "" sign first, followed by a number.

When the charge number of an ion is 1, 1 is omitted and only "+" or "" sign is written; When the valence number is 1, 1 must be indicated.

When a substance containing an atomic cluster is ionized, the atomic cluster should be taken as a whole and cannot be separated.

The number of ions should be written in front of the ion symbol, not in the lower right corner, as in chemical formulas.

In the ionization equation, the total number of positive and negative charges carried by the cations must be equal.

The number of anions and cations ionized by acid-base salts should be the same as the number of corresponding atoms or clusters in their chemical formulas, and the number of charges carried by ionized ions should be equal to the valency values of the elements or clusters.

Strong electrolytes are equalized, weak electrolytes are all reversible, multiple weak acids are ionized in steps, and multiple weak bases are ionized in one step. Acid salts of strong acids are ionized in one step. The acid salt of the weak acid is ionized step by step, the first step is irreversible, and the subsequent step is reversible, and the degree of ionization is smaller step by step.

The conductive properties of the solution are related to the ion concentration and the charge carried.

Substances that can ionize ions can be simply taken apart and written.

The molten state (high temperature) must be written

The ionization equation does not need to be written with conditions.

hf = reversible = h+ +f-

NH4HCO2====NH4+ +HCO3-KhSO4 ionization in aqueous solution KhSO4====K+ +H+ +SO42-

Ionization in the molten state khso4 ====k+ +hso4- understand please be timely!! Good luck with your progress!!

hf====h+ +f-

nh4hco2====nh4+ +hco3-hco3-====h+ +co32-

KhSO4 in aqueous solution KhSO4====K+ +H+ +SO42- in the molten state KhSO4 ====K+ +HSO4-