Find the detailed reaction law between acids and alkalis 100

Conditions or laws of reaction in question:

1 Displacement reaction:

Metal + acid --- salt + H2

1) Metals are more active than hydrogen.

2) Acid to remove concentrated sulfuric acid and nitric acid.

3) Iron reacts with acid to form ferrous salts.

Metal + Salt – New Metal + New Salt.

1) The salt involved in the reaction should be soluble.

2) The activity of the metal is "strong" and the "weak" is replaced

3) In addition to K, CA, Na.

4) Iron reacts with salt to form ferrous salts.

2. Metathesis reaction: the generation of substances that are difficult to ionize, such as water, gas, precipitation, etc.

Acid + salt --- new salt + new acid (carbonate + acid --- new salt + H2O + CO2) 1) weak acid can not react with strong salt.

2) Common salts that can react with acids are: BaCl2, Ba(NO3)3, AGNo3 and carbonate.

Alkali + salt--- neoalkali + new salt.

1) The reactants are soluble.

2) There is precipitation in the product.

Salt + Salt --- New Salt + New Salt.

1) The reactants are soluble.

2) There is precipitation in the product.

Acid and alkali salts generally undergo metathesis reaction.

The reaction with the formation of water is generally a neutralization reaction, that is, the acid and base produce the corresponding salt and water.

The reaction between acid and salt, base and salt, salt and salt is generally formed by gas or precipitation.

Most of the reaction conditions are at room temperature.

By: Pretending to be strong - Magician Level 4 4-14 22:51

One. The reaction law between acid and base is the reaction law between hydrogen ions and hydroxide ions to form water and salt, and the reaction law between hydrogen ions and salt is the reaction law between hydrogen ions and salt negative ions to form gas or weak acids and alkali salts that are weaker than the acidity of the reaction, and it is to generate insoluble precipitates.

Two. The so-called displacement reaction is: a single substance and a compound react to form another element and another compound, which is the displacement reaction, and the acid and alkali salts are compounds, and they are chemical reactions.

Three. Laws of Identifying Ions:1

There are special ions to identify special ions first, for example, to identify chloride ions, you can add silver nitrate solution, there is a white precipitate, and to identify barium ions, you can add sulfuric acid, and there are also white precipitates. 2.According to the known ions, additional ions are added to produce a precipitate to identify.

3.It is identified by looking at whether there is gas generated.

You're spicy, this problem can't be complete for you

1. The reaction of acid-base salts is called.

It must be carried out in solution, there must be precipitation, gas, water generation. One cannot be the other. ）

The rules are: 1. The hydrogen ions that form acids combine with the hydroxide ions that form bases or the acid ions that form salts.

2. The acid ions that form acids are combined with metal ions that form alkalis or metal ions that form salts.

3. The hydroxide ions that form alkalis combine with hydrogen ions that form acids or metal ions that form salts.

4. The metal ions that form alkalis are combined with acid ions that form acids or acid ions that form salts.

5. The combination of acid ions forming salts with hydrogen ions forming acids or metal ions forming alkalis.

6. The metal ions that form salts combine with acid ions that form acids or hydroxide ions that form alkalis.

Solubility table of acid-base salts.

oh（-1） no3（-1） cl(-1) so4(-2) co3(-2) po4(-3)

h(+1) solubilization, volatilization, volatilization, volatilization.

k(+1) solubility solubility.

Na(+1) soluble solubility.

NH4(+1) solubilization, volatile solubilization, solubilization.

Ba(+2) dissolves no, no, no.

Ca(+2) is slightly soluble and slightly soluble no.

mg(+2) is insoluble and slightly soluble.

al(+3) insoluble soluble --no.

zn(+2) is insoluble and insoluble.

Fe(+2) is insoluble and soluble is not.

Fe(+3) is insoluble and soluble is not.

Cu (+2) is insoluble and insoluble is not.

ag(+1)--dissolved is not subtle no.

Note: This is the case at 20 hours. "Soluble" means that the substance is soluble in water, "no" means insoluble in water, "micro" means slightly soluble in water, "volatile" means volatile, and "- means that the substance does not exist or decomposes when it encounters water.

Second, the metathesis reaction.

The acid-base reaction is a neutralization reaction that produces salt and water.

The salts react to form new acids and new salts.

The alkali salts react to form new bases and new salts.

Using soluble alkali as a reactant is a base and salt reaction.

1] In the salt-acid reaction, the strong acid group replaces the weak acid group (HCl+CaCO3=H2CO3+CaCl2); Strong acids and bases will react with each other; Non-weak acids can react with poorly soluble bases; Soluble salts react with soluble bases in solution (the condition is that the product is insoluble).

2] As long as the reaction object is salt, soluble alkali should be used.