Silver oxide (I), the properties and production, chemical reactions

Silver oxide (I), the properties and production of, chemical reactions.

 

 

Silver oxide (I) is an inorganic substance has the chemical formula Ag2O.

 

Brief description of the oxide of silver (I)

Physical properties of silver oxide (I)

Obtaining silver oxide (I)

Chemical properties of silver oxide (I)

The chemical reaction of silver oxide (I)

The application and use of silver oxide (I)

 



Brief description of the silver oxide (I):

Silver oxide (I) is an inorganic substance and a brownish-black color.

The chemical formula of silver oxide (I) Ag2O.

In water essentially insoluble. The solubility of silver oxide (I) in water is 0.017 grams per liter. When dissolved in water, silver oxide (I) gives the water a slightly alkaline reaction.

Silver oxide (I) under sunlight slowly blackens, releasing oxygen.

Has almost the same electrical conductivity as pure silver.

 


Physical properties of silver oxide (I):

Parameter name: Value:
Chemical formula Ag2O
Synonyms and foreign language names silver oxide (eng.)
The type of substance. inorganic
Appearance brownish-black, cubic crystals
Color brown-black
Taste —*
The smell
Aggregate state (at 20 °C and atmospheric pressure of 1 ATM.) solid
Density (state of matter – solid, at 20 °C), kg/m3 7140
Density (state of matter – solid, at 20 °C) g/cm3 Of 7.14
Decomposition temperature, °C 280
Molar mass, g/mol 231,735

* Note:

— no data.

 

Obtaining silver oxide (I):

Silver oxide (I) is obtained by the following chemical reactions:

1. by reacting silver nitrate with alkali (e.g. sodium hydroxide or potassium hydroxide) in an aqueous solution:

2AgNO3 + 2NaOH → Ag2O + 2NaNO3 + H2O

2AgNO3 + 2KOH → Ag2O + 2KNO3 + H2O.

During a chemical reaction produces silver hydroxide, which quickly decomposes into silver oxide (I) and water:

2AgOH → Ag2O + H2O.

2. by anodic oxidation of metallic silver in distilled water.
3. by heating the hydroxide of silver:

2AgOH → Ag2O + H2O (to).

4. by thermal decomposition of silver carbonate:

Ag2CO3 → Ag2O + CO2 (t = 100-140 oC).

 

Chemical properties of silver oxide (I). The chemical reaction of silver oxide (I):

Oxide of silver (I) – basic oxide.

Chemical properties of silver oxide (I) is similar to the properties of oxides of other metals. So it is characterized by the following chemical reactions:

1. reaction of silver oxide (I) with hydrogen:

Ад2О + H2 → 2Ag + H2O (t = 150 oC).

The reaction of silver oxide (I) and hydrogen, the recovery of silver: pure silver is formed and water.

2. reaction of silver oxide (I) with carbon dioxide (carbonic acid gas):

Ag2O + CO2 → Ag2CO3.

Oxide of silver (I) reacts with carbon dioxide (which is acidic oxide), forming a salt with carbonate of silver. Thus as a starting material is used an oxide of silver (I) in suspension.

3. reaction of silver oxide (I) with carbon monoxide:

Ад2О + CO → 2Ag + CO2.

The reaction of silver oxide (I) with carbon monoxide, the recovery of silver: formed of pure silver and carbon dioxide.

4. reaction of silver oxide (I) with water:

Ag2O + H2O = 2Ag+ + 2OH-.

Silver oxide (I) is poorly soluble in water and imparts a slightly alkaline reaction.

5. the reaction of the oxide of silver (I) oxide tellurium:

TeO3 + 3Ag2O → Ag6TeO6 (t = 200 oC).

The reaction produced tellurate of silver (I) .

6. reaction of silver oxide (I) with hydrofluoric acid:

Ag2O + 2HF → 2AgF + H2O.

As a result of chemical reaction it turns out salt is a fluoride of silver (I) and water.

7. reaction of silver oxide (I) with nitric acid:

Ag2O + 2HNO3 → 2AgNO3 + H2O.

As a result of chemical reactions obtained salt – silver nitrate (I) and water.

Similar are the reactions of the silver oxide (I) with other acids.

8. reaction of silver oxide (I) with hydrogen bromide (bromoderma):

Ag2O + 2HBr → 2AgBr + H2O.

As a result of chemical reactions obtained salt – bromide of silver (I) and water.

9. reaction of silver oxide (I) with yodovidona:

Ag2O + 2HI → 2AgI + H2O.

As a result of chemical reactions obtained salt – iodide of silver (I) and water.

10. reaction of silver oxide (I) with ammonia and water:

Ag2O + 4NH3 + H2O → 2[Ag(NH3)2]OH.

The chemical reaction turns the hydroxide diamantaire.

11. the reaction of thermal decomposition of silver oxide (I):

2Ag2O → 4Ag + O2 (t = 160-300 oC).

As a result of chemical reaction produces solid silver and oxygen.

12. reaction of silver oxide (I) with sodium hydroxide and water:

Ag2O + 2NaOH + H2O ⇄ 2Na[Ag(OH)2].

The chemical reaction turns digitoxigenin sodium.

13. reaction of silver oxide (I) with potassium hydroxide and water:

Ag2O + 2KOH + H2O → 2K[Ag(OH)2].

The chemical reaction turns digitoxigenin potassium.

14. reaction of silver oxide (I) with hydrogen peroxide:

Ag2O + H2O2 → 2Ag + H2O + O2.

The reaction of silver oxide (I) and hydrogen peroxide, the recovery of silver: pure silver is formed, oxygen and water.

 

The application and use of silver oxide (I):

Silver oxide (I) is used in medicine as an antiseptic.

 

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