Water, MgO, P2O5, Fe2O3 which are acidic oxides?

p2o5。

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 generally prepared by direct oxidation of non-metals or thermal decomposition of oxygenated acids and oxytates.

Most of the oxides have high thermal stability, especially the oxides of IIA and IVB group elements, Li2O, Na2O, B2O3, Al2O3, SiO2, etc., and less thermally unstable oxides, such as halogen oxides, N2O5, Ag2O, Hgo, etc.

The stability of short-period elemental oxides decreases from left to right, but the stability of alkali metal oxides is worse than that of alkaline earth metals, and it is not difficult to understand this "anomalous" phenomenon when we consider the repulsion between M+ ions that makes the lattice energy of M2O low. In the same group, especially the subgroup elements, the thermal stability is enhanced from top to bottom.

This is because, although the lattice energy decreases from top to bottom as the sum of the cation and anion radii increases, the effect of decreasing ionization energy with increasing atomic radius is more significant, especially when the radius of the cation is smaller than that of the oxygen ion.

p2o5, that's him. However, it does not produce phosphoric acid when added to water, but produces a series of dehydrated phosphoric acid. It requires the presence of nitric acid to produce phosphoric acid, and hot water.

P2O5 This is an acidic oxide, which is added to water to form phosphoric acid, and phosphoric acid is acidic, so this is an acidic oxide.

And the reaction with alkali produces only salt and water, as defined in the textbook.

Phosphorus pentoxide is an acidic oxide, and acidic oxide is generally a non-goldenrod oxide and the ** oxide of certain transition metal elements.

Phosphorus pentoxide is produced by the combustion of phosphorus in oxygen. It is a white amorphous powder or hexagonal crystal. Easily hygroscopic. 360 Sublimation. Soluble in water produces a large amount of heat and produces phosphoric acid, p-ethanol.

The reaction is similar to that of water. Relative density. Melting point 569. Because acidic oxides are corrosive, they should not be directly touched or eaten by hand, nor can they be directly smelled.

Usage:

used as a desiccant for gases and liquids; Organic synthesis of dehydrating agents, polyester resins.

antistatic agents, pharmaceuticals and sugar refining. It is the parent raw material for the preparation of high-purity phosphoric acid, phosphate, phosphide and phosphate.

It can also be used for phosphorus pentoxide sol and H-type aerosol.

of manufacturing. Slag is used in the manufacture of optical glass and ultraviolet transmission.

glass, insulating glass, glass-ceramic and opalescent glass, etc., to improve the dispersion coefficient of glass and its ability to transmit ultraviolet rays.

A, H2CO3 belongs to the grinding file, and it is not an oxide, so A is wrong;

B, P2 O 5 is an oxide, and can react with alkali solution, then it is an acidic oxide, so B is correct;

c, O2 is elemental, not oxide, so c is wrong;

D. NaCl is a salt, not an oxide, so D is wrong Therefore, B

Summary. Hello, Al2O3 is an amphoteric oxide.

It exhibits the properties of an alkaline oxide in an acidic environment, and produces a salt corresponding to metallic aluminum. For example: al2o3+6hno3=2al(no3)3+

3H2O behaves as an acidic oxide in an alkaline environment, forming the corresponding aluminate. For example: Al2O3+2NaOH=2Naalo2+H2O

Hope mine is helpful to you.

Is Al2O3 a basic oxide or an acidic oxide.

Hello, Al2O3 is an amphoteric oxide. In an acidic environment, it exhibits the properties of alkali celery oxide, and produces salts corresponding to metallic aluminum. Such as:

Al2O3+6Hno3=2Al(NO3)3+3H2O in the alkaline environment showed the Huqiao characteristics of the acidic oxide of the trouser head, and the corresponding aluminate was generated. For example: al2o3+2naoh=2naalo2+h2o, I hope mine is helpful to you.

So can it be said to be an acidic oxide?

This can't be said to be an acidic oxide, he is an amphoteric oxide. This is also an oxide species.

Is hydrochloric acid pure?

Hydrochloric acid is not pure, hydrochloric acid is worth being a hydrate of HCl, so it is a mixture.

Acid oxides are a class of acids that can react with water to form a corresponding valence state, or react with alkali to form salt and water (and the product can only have one salt and water, and no other substances can be generated), or react with basic oxides to form salts, but generally do not react with normal salts or acid salts.

Generally, it is a non-metallic oxide and **oxide of certain transition metal elements. For example, phosphorus pentoxide P2O5 [i.e., the anhydride of phosphoric acid], manganese heptaoxide Mn2O7 [i.e., the anhydride of permanganic acid], chromium trioxide CRO3 [i.e., chromic anhydride], etc. CO, NO, etc. are not acidic oxides or alkaline oxides, but are not salt oxides, and water is a special oxide.

We know that alkalis react with acids to form salts and water, bases react with certain non-metallic oxides, and carbonates react with acids to form salts and water. For example.

2naoh+co2=na2co3+h2o

ca(oh)2+so3=caso4+h2o

ca(oh)2+so2=caso3↓+h2o

Such non-metallic oxides are called acidic oxides.

Most of the non-metallic oxides are acidic oxides, and among the non-metallic oxides we are familiar with, carbon monoxide and nitric oxide are not acidic oxides, because their properties are different from acidic oxides, and they usually cannot be classified as acidic oxides. NO2 N2O, etc. are also not acidic oxides.

Most of the acidic oxides are non-metallic oxides.

Most of the non-metallic oxides are acidic oxides.

Only oxygenated acids have acidic oxides.

Carbon monoxide, nitric oxide, nitrogen dioxide are not acid oxides, good wishes!

The relationship between the oxidation of K2FeO4 and the acidity and alkalinity of the solution is that the stronger the acidity, the stronger the oxidation of K2FeO4. The stronger the alkalinity, the weaker the oxidation of K2FeO4.

Potassium ferrate (K2FeO4) is a strong oxidizing teaser, which can be used as a water treatment agent and high-capacity battery material. According to the relevant information, K2FeO4 is a purple solid, slightly soluble in KOH solution; It has strong oxidizing properties, produces oxygen quickly in acidic or neutral solutions, and is more stable in alkaline solutions. That is, the smaller the pH, the stronger the oxidation of K2FeO4.

With the increase of pH >8, the oxidation of K2FeO4 decreases.

Potassium ferrite (K2FeO4) is a new, high-efficiency and multi-functional water treatment agent, and it will not cause secondary pollution.

CO2 is an acidic oxide. The cons are closed.

Definition of an acidic oxide: an oxide that reacts with a base to form salts and water.

Carbon dioxide (CO) is a colorless, odorless, and non-toxic gas that is the most common acidic oxide.

When carbon dioxide is dissolved in water, carbonic acid is formed (H Tong Chong Co), which is a weak acid, and CO2 is also capable of reactions such as: CO2 + 2NaOH = Na2CO3 + H2O, so CO2 is an acidic oxide.

Because H2CO3 = CO2 + H2O, CO2 is also called the acid anhydride of H2CO3, which is also called carbon dioxide in daily life.

How carbon dioxide is produced.

Carbon dioxide gas is a part of the composition of the atmosphere (accounting for the total volume of the atmosphere, which is abundant in nature, and its main ways of production are as follows: rent cracking.

1. Organic matter (including animals and plants) can release carbon dioxide in the process of decomposition, fermentation, decay and deterioration.

2. Carbon dioxide should also be released during the combustion of oil, paraffin, coal and natural gas.

3. Petroleum and coal will also release carbon dioxide in the process of producing chemical products.

4. All manure and humic acid can also release carbon dioxide during fermentation and maturation.

5. All animals must inhale oxygen and exhale carbon dioxide during breathing.

Summary. Zinc oxide can be dissolved in a variety of acids, among which the more common ones are sulfuric acid, hydrochloric acid, nitric acid, etc. The solubility and mode of reaction of zinc oxide in these acids will vary.

Taking sulfuric acid as an example, zinc oxide will react with sulfuric acid to form a solution of zinc sulfate and water, and the reaction formula is Zno + H2SO4 ZNSO4 + H2O. In hydrochloric acid and nitric acid, zinc oxide undergoes a similar reaction to produce a corresponding solution of zinc hydrochloride and zinc nitrate. It should be noted that when using acid to dissolve zinc oxide, you need to pay attention to safety to avoid acid splashing on ** and eyes and other parts.

Zinc oxide can be dissolved in a variety of acids, among which the more common ones are sulfuric acid, hydrochloric acid, nitric acid, etc. The solubility of zinc oxide in these acids and the way in which they react will vary. Taking sulfuric acid as an example, zinc oxide will react with sulfuric acid to form a solution of zinc sulfate megabrigade and water, and the reaction formula is ZNO + H2SO4 ZNSO4 + H2O.

In hydrochloric acid and nitric acid, zinc oxide undergoes a similar reaction to produce a corresponding solution of zinc hydrochloride and zinc nitrate. It should be noted that when using acid to dissolve zinc oxide, it is necessary to pay attention to the safety of the answer to avoid acid splashing on the ** and eyes and other parts.

You've done a great job! Can you elaborate on that?

Zinc oxide can be dissolved in a variety of acids, among which the more common ones are sulfuric acid, hydrochloric acid, nitric acid, etc. The solubility of zinc oxide in these acids and the way in which they react will vary. Taking sulfuric acid as an example, zinc oxide will react with sulfuric acid to form a solution of zinc sulfate megabrigade and water, and the reaction formula is ZNO + H2SO4 ZNSO4 + H2O.

In hydrochloric acid and nitric acid, zinc oxide undergoes a similar reaction to produce a corresponding solution of zinc hydrochloride and zinc nitrate. It should be noted that when using acid to dissolve zinc oxide, it is necessary to pay attention to the safety of the answer to avoid acid splashing on the ** and eyes and other parts.