Is Na2CO3 a solid? Difference Between Na2CO3 and NaHCO3

Chemical Formula: Na2CO3 [Molecular Weight] [Common Names] Lump Alkali, Soda Ash, Stone Alkali, Soda (Soda), Mouth Alkali (Historically, it was generally transported to the whole country through Zhangjiakou and Gubeikou, so it is also said to be "mouth alkali".) Appearance] white powder or fine-grained crystals (anhydrous pure product) [taste] astringent [relative density (water = 1)] melting point: 851 [classification] strong alkali and weak salt [chemical properties] 1) the solution is alkaline and can react with acid. 2) Na2CO3+2HCl=2NaCl+H2O+CO2 3) Na2CO3 reacts with base.

Na2CO3+Ca(OH)2=CaCO3 +3NaOH Na2CO3+HCl=NaCl+H2O+CO2 CaCO3+2HCl=CaCl2+H2O+CO2 4) Na2CO3, NaCl reacts with salt. Na2CO3 + BACl2 = BAC3 [white powder, insoluble in water, soluble in acid] +2NaCl NaCl + agNO3=AGCL + nano3

Yes Solid 2Na+NH4HCO3==NH3 +NA2CO3+H2 It's a multi-step reaction, I compressed it, and that's the one above.

First, the common name is different:

1. Na2CO3 is commonly known as soda ash and soda. White powder. It is relatively stable and not easy to decompose when heated.

2. NaHCO3 is commonly known as baking soda.

Second, the degree of stability is different:

1. Na2CO3 white powder. It is relatively stable and not easy to decompose when heated.

2. NaHCO3 white fine crystals. Unstable and easy to decompose when heated.

3. Different molecular weights:

1. Molecular weight of Na2CO3:

2. Molecular weight of NaHCO3: .

Fourth, the use is different:

1. Na2CO3 is an important organic chemical raw material, mainly used in the production of flat glass, glass products and ceramic glaze. It is also widely used in household washing, acid neutralization, and food processing.

2. NaHCO3 is used as a starter in the food industry, a generator of carbon dioxide in soft drinks and cold drinks, and a preservative of butter. It can be directly used as a raw material in the pharmaceutical industry for ** hyperacidity. It can also be used in film production, tanning, mineral processing, smelting, metal heat treatment, as well as in the fiber and rubber industries.

At the same time, it is used as a detergent for wool, a foam fire extinguishing agent, and for agricultural soaking.

Na2CO3 generally refers to sodium carbonate, which is an inorganic compound with molecular weight, also known as soda ash, but it is classified as a salt, not a base.

Properties of Sodium Carbonate:Sodium carbonate is a white odorless powder or granule at room temperature, absorbent, slightly soluble in absolute ethanol, insoluble in propanol. Its hydrates are Na2CO3·H2O, Na2CO3·7H2O and Na2CO3·10H2O.

The aqueous solution of sodium carbonate is alkaline, which can make phenolphthalein red and corrosive, and can metadecompose with acid, and can also metacompose with some calcium salts and barium salts.

Physical properties: Sodium carbonate is a colorless powder of white song slag that is easily soluble in water, and the solution is alkaline. It can decompose at high temperature, but does not decompose when heated.

Chemical properties. 1. Weathering. It is easy to weather in the air wilderness.

2. Reaction with acid. For example, sodium carbonate reacts with excess hydrochloric acid to form sodium chloride and carbonic acid.

3. Reaction with alkali. For example, sodium carbonate and calcium hydroxide react to form sodium hydroxide and calcium carbonate precipitates. Liang Wu.

4. Reaction with salt. For example, sodium carbonate and barium chloride react to form sodium chloride and barium carbonate precipitates.

5. React with water and carbon dioxide to generate sodium bicarbonate.

Sodium carbonate, commonly known as soda, soda ash, washing alkali, chemical formula: Na2CO3, under normal circumstances, is a white powder, a strong electrolyte. The density is 851 °C, soluble in water, and has the universal properties of salt.

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The third chemical acid and alkali salt, 73 pages of the ninth edition of the people's education edition. Sodium carbonate, commonly known as soda ash, soda.

Soda ash soda sodium carbonate, sodium bicarbonate baking soda.

Two metals can form compounds, and cobalt has no negative valence.

Sodium carbonate? Commonly known as soda ash bar.

Chemical Formula】Na2CO3

Molecular weight] common name] soda ash, soda (soda).

Appearance: White powder or fine-grained crystals (anhydrous pure) [Taste] Astringent.

Relative density (water = 1).

Melting Point] 851

Classification] strong alkali and weak salt.

Stability] It can be decomposed at high temperatures to produce sodium oxide and carbon dioxide. Long-term exposure to the air can absorb moisture and carbon dioxide in the air, form sodium bicarbonate, and form hard lumps. It is very hygroscopic, easily forms hard lumps, and does not decompose at high temperatures.

There are three types of sodium carbonate containing crystalline water: Na2CO3·H2O, Na2CO3·7H2O, and Na2CO3·10H2O.

Solubility] soluble in water, slightly soluble in absolute ethanol, insoluble in propanol.

Sodium carbonate is easily soluble in water, is a weak salt, dissolved in water after hydrolysis reaction, so that the solution is alkaline, has a certain corrosiveness, can neutralize with acid, generate the corresponding salt and release carbon dioxide.

1. The water solubility is different.

na co: large water solubility;

NAHCO: Low water solubility.

2. The degree of reaction with acid is different.

Na Co: Reacts more slowly with acids;

Nahco: Reacts quickly with acids.

3. The thermal stability is different.

na co: does not decompose when heated;

NAHCO: Easy to decompose when heated.

4. Different uses.

NA CO: Used in detergent, glass, soap, paper, textile and other industries.

NAHCO : used for baking powder, fire extinguishing agent, ** hyperacidity.

Sodium carbonate, commonly known as soda ash, soda. White powder. It is relatively stable and not easy to decompose when heated. Strong electrolytes. Soluble in water.

Sodium bicarbonate, commonly known as baking soda. Small white crystals. Unstable and easy to decompose when heated. Soluble in water.

Reacts with acid Na2CO3 + 2HCl===2NaCl + CO2 + H2O

NaHCO3 + HCl ==NaCl + CO2 + H2O reacts with base Na2CO3 +Ca(OH)2 ==CaCO3 + 2NaOH

nahco3+ naoh ==na2co3 + h2o

Interconversion 2 NaHCO3 ==Na2CO3 + H2O + CO2 (Condition: Heating); Na2CO3 + H2O + CO2 ==2NaHCO3 Differentiation Method Heating method (see above for equation).

1: Add CaCl2 solution to the two solutions, NaHCO3 does not react with CaCl2, while Na2CO3 reacts with CaCl2 to form CaCO3 solution.

2. Add dilute HCl dropwise to the two solutionsWhen dilute HCl is added dropwise in Na2CO3 solution, only a small amount of gas is generated, and even no gas is released. If dilute HCl is added dropwise in NaHCO3, gas (in large quantities) is immediately released.

Three: add agno3, no precipitate is nahco3, and there is precipitate na2co3

Four: Add BaCl2, there is a precipitate is Na2CO3There is no precipitate of NaHCO3

Five: Two put into water, the solubility of NaHCO3 is not very good, and Na2CO3 is better.

Six: with pH test paper, the alkalinity of sodium carbonate is greater than that of sodium bicarbonate, the pH value is large is Na2CO3, and the small is NaHCO3

Seven: prepare a solution of the same concentration (quality), evaporate at constant temperature and reduced pressure under the same conditions, and the first to precipitate the crystal is NaHCO3

Eight: sodium carbonate and hydrochloric acid reaction is mainly exothermic, and you can feel the heat of the test tube. Sodium bicarbonate reacts with hydrochloric acid, which is mainly endothermic, and you can feel that the test tube is a little cold.

9. Carbonate will react with positive 2-valent magnesium ions to form carbonate precipitate.

10: Phenol is used to identify, phenol reacts with sodium carbonate to produce sodium bicarbonate.