Can acidic oxides react with acids Basic oxides and alkaline na?

Let me summarize your answers. Acidic oxides in general do not react with acids, and basic oxides do not react with alkalis. But just in general, there are many special cases, not one or two as others say, silica can react with hydrofluoric acid SiO2+4HF=SIF4+2H2O; Sulfur dioxide and sulfur trioxide can react with hydrosulfuric acid, SO2 + 2H2S = 3S + 2H2O, and the one of sulfur trioxide and hydrofluoric acid will not be written (because the product may have several conditions, which is related to the ratio of the two).

There are also special cases of alkaline oxides reacting with alkalis, and strong alkalis can actually react with manganese dioxide (but also strong oxidants as reactants), for example, potassium hydroxide, manganese dioxide, and ozone can react. As for the reaction between alumina and strong bases, it is also counted, but alumina is an amphoteric oxide, which is both a basic oxide and an acidic oxide, not none of the above.

Generally, acidic oxides do not react with acids. However, it is important to remember that silica can react with hydrofluoric acid SiO2 + 4HF == SIF4 + 2H2O In general, the basic oxides learned in high school do not react with alkalis.

Alumina is an amphoteric oxide, which is neither basic nor acidic.

At high temperatures, some basic oxides and acidic oxides react to form salts: cao+sio2=casio3. Some basic oxides can react directly with acidic oxides:

na2o+co2=na2co3。

The basic oxide reacts with water to form the corresponding hydroxide: Na2O+H2O=2NaOH; CaO+H2O=Ca(OH)2, most of the acidic oxides can be directly combined with water to form oxygen-containing acid: SO3+H2O=H2SO4; SO2 + H2O = (reversible) H2SO3.

Basic oxide species.

Basic oxides include active metal oxides and low-valent oxides of other metals such as Na2O, CAO, BAO and CRO. The corresponding hydrate of basic oxides is alkali. For example, the hydrate corresponding to CaO is Ca(OH)2 and the hydrate corresponding to Na2O is NaOH.

However, if the corresponding hydrate is an insoluble base, its oxide does not react with water, such as copper oxide does not react with water, alkali metal sodium, potassium, etc., as well as calcium and barium oxides can react with water to form corresponding hydroxides.

The acid reacts with the alkaline oxide to form salts and water. Basic oxide + acid = salt + water. Strong acids react with all basic oxides. For example, the reaction of iron oxide and hydrochloric acid.

Basic oxides are all metal oxides, and metal oxides are not necessarily basic oxides, such as Mn2O7 is an acid oxide, Al2O3 is an amphoteric oxide, the oxide that can react with alkali to form salt and water is called acid oxide, and the oxide that can react with acid to form salt and water is called alkaline oxide, which can react with acid to form salt and water, and can react with alkali to form salt and water oxide is amphoteric oxide.

Alkaline oxide considerations

Note that oxides that can react with acids are not necessarily basic oxides, such as SiO2 can react with HF (hydrofluoric acid), SiO2 is an acid oxide, but not a basic oxide, SiO2 can react with HF is a characteristic of SiO2, and it has nothing to do with whether it is a basic oxide or an acid oxide.

Alkali metal oxides are not necessarily basic oxides, such as Na2O2 can react with water to form alkalis, but it is a peroxide rather than a basic oxide. Because it has oxygen in addition to producing bases, it is not a basic oxide.

The above content refers to Encyclopedia - Basic Oxides.

Acidic oxides can react with water to produce acids, and alkaline oxides can react with water to produce alkalis.

1.Sodium Oxide:

Sodium oxide, molecular weight, off-white amorphous flakes or powders, melting point 1275, boiling point 1950, density of grams per cubic centimeter. Sodium oxide is sensitive to moisture, easy to deliquescent, and violently reacts with water to form sodium hydroxide. Sodium oxide melts when dark red is red-hot and decomposes into sodium peroxide and sodium elemental at temperatures greater than 400 degrees Celsius.

2. Calcium oxide:

Calcium oxide (calcium oxide) is an inorganic compound, its chemical formula is CAO, commonly known as quicklime. The physical properties are white powder on the surface, gray-white for impurities, light yellow or gray when containing impurities, and hygroscopic.

3. Barium oxide:

Barium oxide (barium oxide) with the molecular formula Bao and molecular weight is. It is a colorless cubic crystal. Soluble in acid, insoluble in acetone and ammonia.

It reacts with water to form barium hydroxide. Barium carbonate is easily absorbed in the air and carbon dioxide is formed. Poisonous!

4. Potassium oxide:

Potassium oxide, colorless cubic crystals. Density, 350 decomposition, easy deliquescent, soluble in water and combined with hydration to form potassium hydroxide. Mainly used in the inorganic industry, it is the basic raw material for the manufacture of various potassium salts such as potassium hydroxide, potassium sulfate, potassium nitrate, potassium chlorate, potassium alum, etc.

5. Magnesium oxide:

Magnesium oxide (chemical formula: MGO) is an oxide of magnesium, an ionic compound. It is a white solid at room temperature. Magnesium oxide exists in nature in the form of chlorite and is the raw material for magnesium smelting.

Magnesium oxide has highly fire-resistant insulating properties. After burning at a high temperature of more than 1000 °C, it can be transformed into crystals, and when it rises to 1500 - 2000 °C, it becomes dead burned magnesium oxide (that is, the so-called magnesia) or sintered magnesium oxide.

Acidic oxides react with basic oxides to form salts and water.

General properties of acidic oxides:

1. Most of them can react with water to form corresponding acids (except for some oxides that cannot react with water, such as silica SiO2).

2. Reaction with alkali produces only one kind of salt and water.

3. Reaction with alkaline oxides.

Note. 1. Most of the acidic oxides are non-metallic oxides.

2. Most of the non-metallic oxides are acidic oxides.

3. Only oxygenated acids have acidic oxides.

4. Carbon monoxide, nitric oxide, and nitrogen dioxide are not acidic oxides.

5. Silica is a special acid oxide. Silica can react with hydrofluoric acid, but not with water (etching glass).

Alkali mass dry oxide.

It refers to an oxide that is dissolved in water to form an alkali or reacts with an acid to form salt and water. At high temperatures, partially basic oxides and acidic finch or bridge oxides.

Effect to produce salt.

At high temperatures, some basic oxides and acidic oxides react to form salts: cao+sio2=casio3.

Some basic oxides can react directly with acidic oxides: Na2O+CO2Na2

CO31) basic oxide + acid = salt + water: Fe2

o36hcl=2fecl3

3h2o;cuo+h2

so4cuso4h2o。

2) Acidic oxygen is a fierce acid + alkali = salt + water: 2NaOH + CO2Na2CO3

h2o;2naoh+sio2

na2sio3h2o。

3) The alkaline oxide reacts with water to form the corresponding hydroxide: Na2O+H2O=2NaOH; cao+h2

o=ca(oh)2

4) Most of the acidic oxides can be directly combined with water to form oxygenated acid: SO3H2O=H2

so4so2

H2O = (reversible) H2SO3

Oxides that can react with acids are not necessarily basic oxides. For example, silica can react with hydrofluoric acid, but it is an acidic oxide, not a basic oxide.

According to the different chemical properties, oxides can be divided into acidic oxides, basic oxides, and non-salt oxides;

Acid oxides refer to oxides that can react with alkalis and only produce salts and water (the valence of each element remains unchanged during the reaction), such as CO2 SO2 SiO2, etc., and acid oxides have their corresponding homovalent acids.

Basic oxides refer to oxides that can react with acids and only produce salts and water (the valence of each element remains unchanged during the reaction), such as Cuo, Cao, Na2O, MGO, etc., all have their corresponding isovalent bases.

In addition, all other oxides are non-salt oxides. Such as CO, NO, H2O, etc., there is no corresponding acid or base. ,6,Is the oxide that can react with the acid necessarily a basic oxide?

For example, whether manganese oxide 2 can react with sulfuric acid.

Acidic oxides react with alkalis to produce only salts and water oxides. Most of the non-metallic oxides are acidic oxides, and the ** oxides of some transition elements (such as CRO3, Mn2O7, etc.) are also acidic oxides. Acidic oxides belong to anhydrides, for example, SO2 is called sulfur anhydride, SO3 is called sulfur anhydride, CO2 is called carbon anhydride, and acetic anhydride is an acid anhydride but not an acid oxide.

The hydrate corresponding to the acid oxide is oxygenated acid, such as the hydrate corresponding to SO3 is H2SO4, the hydrate corresponding to CO2 is H2CO3, and the hydrate corresponding to SiO2 is H2SiO3, etc. Most of the acidic oxides can be directly combined with water to form oxygenated acids, and a few acidic oxides (SiO2) cannot react directly with water. Acid oxides are prepared by direct oxidation of non-metals or thermal decomposition of oxygenated acids and oxygenates.

Acid oxide considerations.

Acid oxides include most non-metallic oxides and a few metal oxides (such as Mn2O7), it can be seen that acidic oxides are not necessarily non-metallic oxides, and a few non-metallic oxides are not acidic oxides, such as CO, H2O, etc.

Most of the acidic oxides can be soluble in water and combine with water to form acid, and a few acidic oxides are insoluble in water, nor can they react with water to form acid, such as SiO2.