What are the chemical properties of salt, what are the general properties of salt?

Hope mine can help you.

For the concept of salt, we can think of it as this: after ionization of acid and base, ion exchange produces salt and water. For example, we think of NaCl as a product of the ionization of HCL and NaOH.

Chemical properties of common salts and salts General properties of alkali General alkali Sodium hydroxide sodium hydroxide sodium hydroxide Sodium hydroxide Calcium hydroxide Alkali makes the purple litmus test solution blue and makes the colorless phenolphthalein test solution red. Sodium hydroxide turns the purple litmus solution blue, and the colorless phenolphthalein solution turns red. Calcium hydroxide turns purple litmus solution blue, and colorless phenolphthalein solution turns red.

Acidic oxide + alkali salt + water 2NaOH + CO2 = Na2CO3 + H2O Ca(OH)2 + CO2 = CaCO3 + H2O acid + alkali Salt + water NaOH + HCl = NaCl + H2O Ca(OH)2 + H2SO4= CASO4 + 2H2O salt + alkali Another salt + another base 2NaOH + CuSO4 = Na2SO4 + Cu(OH)2 Ca(OH)2 + Na2CO3 = CaCO3 +2NaOH Properties of Salt Example Salt solution + metal Salt + metal CuSO4 + Zn= ZnSO4 + Cu salt + acid Salt + acid BaCl2 + H2SO4=BaSO4 +2HCl salt solution + alkali solution Salt + alkali 3NaOH + FeCl3=3NaCl + Fe(OH)3 Salt solution + salt solution Salt + salt AgnO3 + NaCl = AgCl + nano3

NoteNote::: In the table of metal activity sequences, only the first in line can displace the next in line from their salt solution. However, the reaction of K, Ca, and Na with salt solution is special and is not required here.

For details, I hope you will learn and improve, o( o haha

It can react with acids, alkalis and salts.

The general properties of salt are:

1. Some salts can react with more reactive metals to form new salts and metals.

2. Some salts can react with acids to form new salts and new acids.

3. Some salts can react with certain bases to form new salts and new bases.

4. Some different salts can react with each other to form two new salts.

Salt is divided into single salt and combined salt, and single salt is divided into normal salt and acid trembling salt.

Basic salts, combined salts are divided into double salts and complex salts. Among them, acid salts contain hydrogen ions in addition to metal ions and acid ions.

In addition to metal ions and acid ions, the basic salt also contains hydroxide ions, and when the double salt is dissolved in water, it can generate a combined salt with the same ion as the original salt; When complex salts are dissolved in water, complex salt complexes of complex ions that are different from the original salts can be generated.

Physical. 1. Color.

The color of salt can be pure and transparent, opaque or metallic. In most cases, the transparency or opacity of the salt surface is only related to the single crystals that make up the salt. When the light leak line hits the salt, it is reflected back by the grain boundaries, and the large crystals appear transparent, and the polycrystals together look more like white powder.

2. Smell. Strong.

or strong alkaline salts (strong salts) are non-volatile and odorless. Weak acids or weak alkaline salts (weak salts) can produce different odours (e.g. acetic acid) depending on the conjugated acid-base pair.

Salt will have the taste of acetic acid, hydrogen cyanide.

In addition, weak acids or alkaline salts will volatilize and decompose, and due to hydrolysis reactions.

The reaction with the synthesis of weak salts is reversible, so the decomposition of weak salts is accelerated when water is present.

3. Solubility.

Many ionic compounds.

can be dissolved in water or similar solvents, the solubility of compounds and the composition of anions.

It is related to both cations and solvents, so there is a specific relationship. Among the cations, all sodium, potassium and ammonium ions.

The salts are soluble in water; Among the anions, the salts of nitrate ions and bicarbonate ions can be dissolved in water.

In addition to barium sulfate.

In addition to calcium sulfate and lead sulfate, most of the salts of sulfate ions can also be soluble in water. However, if the bonds between ions are strong, they produce highly stable solids and are not easily soluble in water, for example, most carbonates are insoluble in water, such as lead carbonate and barium carbonate.

Commonly used salt solubility formulas in middle school: potassium, sodium, ammonium salt, nitrate, soluble in water, insoluble chloride, insoluble silver chloride, sulfate, insoluble barium and lead hydroxide carbonate, mostly sinking.

The general properties of salt are that metals that are more active than metals in salt are added to salt dissolved in water to form new metals and new salts, acids and salts form new acids and new salts, and alkali salts are added to produce new alkalis and new salts.

1.Metal (more active than metal in salt) + salt (soluble in water) - new metal + new Wushi salt.

fe+cuso4=feso4+cu

2.Acid + Salt – New Acid + New Salt (Condition: Weak electrolyte, gas or sediment) Acid Tangerine Salt New Salt New Acid.

caco3+2hcl==cacl2+h2o+co2↑na2co3+2hcl==2nacl+h2o+co2↑hcl+agno3==agcl↓+hno3h2so4+bacl2==baso4↓+2hcl3.Salt + salt - two new salts (conditions: the reactants are soluble in water, and the products must have precipitation) salt 1 salt 2 new salt 1 new salt.

2kcl+agno3==agcl↓+kno3nacl+agno3==agcl↓+nano3na2so4+bacl2==baso4↓+2nacl4.Alkali + salt - neoalkali + neosalt (conditions: reactants are soluble in water, and the product must have precipitation) saline alkali neosalt neoalkali.

cuso4+2naoh==cu(oh)2↓+na2so4fecl3+3naoh==fe(oh)3↓+3naclca(oh)2+na2co3==caco3↓+2naohfe2(so4)3+3ba(oh)2=3baso4↓+2fe(oh)3↓

1 Metal (more active than metal in salt) + salt (soluble in water) – new metal + new salt.

fe+cuso4=feso4+cu

2 Acid + Salt – New Acid + New Salt (Condition: Weak electrolyte, gas or precipitate in the product).

Acid salt new salt new acid.

caco3+2hcl==cacl2+h2o+co2↑ na2co3+2hcl==2nacl+h2o+co2↑

hcl+agno3==agcl↓+hno3 h2so4+bacl2==baso4↓+2hcl

ba(no3)2+h2so4==baso4↓+2hno3

nahco3+hcl==nacl+h2o+co2↑

3 Salt old spike noise + salt - two new salts (conditions: the reactants are soluble in water, and the raw products must have precipitation).

Salt 1 Salt 2 New Salt 1 New Salt 2

kcl+agno3==agcl↓+kno3 nacl+agno3==agcl↓+nano3

na2so4+bacl2==baso4↓+2nacl bacl2+2agno3==2agcl↓+ba(no3)2

cacl2+na2co3==caco3↓+2nacl

4 Alkali + salt - new alkali + new salt (conditions: the reactants are soluble in water, and the biomorphic products must have precipitation).

Saline alkali new salt new alkali.

cuso4+2naoh==cu(oh)2↓+na2so4 fecl3+3naoh==fe(oh)3↓+3nacl

ca(oh)2+na2co3==caco3↓+2naoh naoh+nh4cl==nacl+nh3↑+h2o

mgcl2+2naoh==mg(oh)2↓+2nacl fe2(so4)3+3ba(oh)2=3baso4↓+2fe(oh)3↓

For the general knowledge of salts in chemistry, I hope that students will have a good grasp of the following content.

The salts in (1), (3) and (4) must be soluble in water) metal salts metal salts (must conform to the order law of metal activity) acid hydrochloride salt carbonate acid salt H2o CO2 salt 1 alkali 1 salt 2 alkali 2 The salts and bases participating in the reaction must be soluble in water.

Salt 1 salt 2 salt 3 salt 4 The salt participating in the reaction must be soluble in water and conform to the law of metathesis reaction).

The students can be very hungry for the general knowledge of the above salt, and I hope that the students can study hard and faithfully, and I believe that they will learn great!

Hydrochloride refers to the salt formed by hydrochloric acid, that is, the salt composed of metal ions (or ammonium ions) and chloride ions, which is a general term for a large class of substances.

General foci: because it contains Cl-, hydrochloride dissolved in water can react with AgNO3 to form AgCl precipitate; Cl- reaction of oxidation to Cl2, etc.

The definition of salt in chemistry refers to a class of metal ions or ammonium ions (NH4+) combined with acid ions or non-metal ions, such as calcium sulfate, copper chloride, sodium acetate, generally speaking, salt is the product of metathesis reaction, such as sulfuric acid and sodium hydroxide to produce sodium sulfate and water, there are also other reactions to generate salts, such as displacement reactions.

Salt is divided into single salt and combined salt, single salt is divided into normal salt, acid salt, basic salt, and combined salt is divided into double salt and complex salt. Among them, acid salts contain hydrogen ions in addition to metal ions and acid ions, and basic salts contain hydroxide ions in addition to metal ions and acid ions.

When the double salt is dissolved in water, it can generate a combined salt with the same ion as the original salt; When the complex salt is dissolved in water, it can generate a complex salt complex of complex ions that are different from the original salt.

In general, insoluble salts are solid in the standard state, but there are exceptions, such as molten salt and ionic liquids. Soluble salts and molten salts are electrically conductive and can therefore be used as electrolytes.

The cytoplasm, blood, urine and mineral water of the cells, contain many different salts.