Does anyone know the physical and chemical properties of sodium carbonate and sodium bicarbonate! Th

Sodium carbonate (soda ash) The chemical formula is Na2CO3, commonly known as soda ash, also known as soda and soda ash, an important chemical basic raw material, and the main product of the soda ash industry. It is usually a white powder, easy to decompose at high temperatures, soluble in water, and the aqueous solution is alkaline. Soda ash will deliquescent in humid air, slowly absorb carbon dioxide and water, and partially become sodium bicarbonate, so the packaging should be strict, otherwise it will absorb moisture and agglomerate, sodium carbonate and water will form Na2CO3·10H2O, Na2CO3·7H2O, Na2CO3·H2O three kinds of hydrates, of which Na2CO3·10H2O is the most stable, and the heat of dissolution soluble in water is very small.

It is mostly used in the photographic industry, and its trade name is carbon and oxygen. Na2CO3·10H2O, also known as crystalline alkali, used to be used in household washing and wool washing, so it is also known as "washing alkali". In the past, China's folk used to use both laundry and dough "lump alkali", which is made by mixing soda ash with a large amount of water (plus some baking soda (NaHCO3), which has a water content of more than 50%.

Sodium carbonate exhibits endothermic reaction when dissolved in water and is easily weathered in air. Na2CO3·7H2O is unstable and can be precipitated from sodium carbonate saturated solution only in the range. Sodium carbonate is a weak acid and strong alkali salt.

Na2CO3 produced by chemical methods is purer than trona, which is why people call it "soda ash".

The chemical formula of baking soda is NaHCO3. It also has many names, the scientific name is sodium bicarbonate, also known as sodium bicarbonate or acid carbon.

Sodium acid. In addition to baking soda, common names include baked soda, fermented soda and heavy alkali.

Baking soda is a white crystal that dissolves in water, and the aqueous solution is weakly alkaline. In hot air, it can slowly decompose, releasing a portion of carbon dioxide; When heated to 270, all carbon dioxide is released.

Sodium carbonate, a white solid, is alkaline due to the hydrolysis of carbonate when dissolved in water, and can react with acids to form carbon dioxide and sodium salts.

Sodium bicarbonate, that is, baking soda, white solid, when dissolved in water, because the hydrolysis of bicarbonate is greater than ionization, so it is also alkaline, and can react with acid to form carbon dioxide, water, and sodium salt, which is decomposed into sodium carbonate, carbon dioxide, and water by heating.

1. Stability. It is easy to decompose when heated. Slowly decomposes in moist air.

At about 50 the reaction begins to form co?, at 100 all become sodium carbonate. It is rapidly decomposed in weak acid, and its aqueous solution begins to decompose carbon dioxide and sodium carbonate at 20, and all decompose at the boiling point.

The solution made of cold water without agitation only reacts slightly alkaline to phenolphthalein test strips, and its alkalinity increases when placed or raised at higher temperatures.

2. Different from soda ash (sodium carbonate) and baking soda (sodium bicarbonate) of industrial alkali, baking soda is made by absorbing carbon dioxide from soda ash solution or crystal. Therefore, baking soda is also called edible alkali (powder) in some places. Baking soda is solid, round, white in color, and easily soluble in water.

3. Single salt is divided into: normal salt, acid salt, basic salt, sodium bicarbonate is the acid code coarse salt generated after the neutralization of strong alkali and weak late branch acid, which is weakly alkaline when dissolved in water.

4. In the mass production of steamed buns, fritters and other foods, often mix baking soda melt water into the noodles, and decompose into sodium carbonate, carbon dioxide and water after heating, carbon dioxide and water vapor overflow, which can cause the food to be more fluffy, and sodium carbonate remains in the food. Excessive amounts of baking soda in steamed buns can be tasted.

Summary. Sodium carbonate and sodium bicarbonate are two forms of a chemical compound. They have similar chemical properties because they are both alkaline substances that can react with acids to produce salts and water.

The specific performance is as follows:1Both sodium carbonate and sodium bicarbonate can be neutralized with weak acids, producing corresponding salts and water, such as:

Sodium carbonate + acetic acid Sodium acetate + carbon dioxide + water sodium bicarbonate + sulfuric acid sodium bisulfate + carbon dioxide + water 2Both sodium carbonate and sodium bicarbonate have a buffering effect and are able to stabilize the pH value of the solution. 3.

Both sodium carbonate and sodium bicarbonate are soluble in water, but sodium bicarbonate is more soluble because it has stronger polarity. 4.Both sodium carbonate and sodium bicarbonate can be involved in the reaction with carbonic anhydride.

Sodium carbonate and sodium bicarbonate are two modified forms of a compound. They have similar chemical properties because they are both alkaline substances that can react with acids to produce salts and water. The specific performance is as follows:

1.Both sodium carbonate and sodium bicarbonate can be neutralized with weak acids to produce corresponding salts and water, such as: sodium carbonate + acetic acid sodium acetate + carbon dioxide + water sodium bicarbonate + sulfuric acid sodium bisulfate + carbon dioxide + water 2

Both sodium carbonate and sodium bicarbonate have a buffering effect and are able to stabilize the pH value of the solution. Celery Pin 3Both sodium carbonate and sodium bicarbonate are soluble in water, but sodium bicarbonate is more soluble because it has stronger polarity.

4.Both sodium carbonate and sodium bicarbonate can be involved in the reaction with carbonic anhydride.

Can you elaborate on that a little bit more?

For example: 2 NaHCO3 Na2CO3 + H2O + CO2 are some examples of similar chemical properties of sodium carbonate and sodium bicarbonate.

Summary. Sodium carbonate (Na2CO3) and sodium bicarbonate (NaHCO3) have a lot of similar chemical properties because they both contain carbonate ions (CO32-) and hydrogen ions (H). Specific similar chemical properties include:

1.All can be dissolved in water to form an alkaline solution that neutralizes acidic substances. 2.

can participate in acid-base reactions and release carbon dioxide gas. 3.can react with acidic oxides to form the corresponding salts and water.

4.can be decomposed at high temperatures to release carbon dioxide gas. 5.

Both can be used as baking powders to promote swelling and fermentation in food. The difference is that sodium carbonate is more alkaline, while the hydrogen ions in sodium bicarbonate make it appear weaker alkaline. In addition, they also differ in crystal structure and chemical formula.

Sodium carbonate (Na2CO3) and sodium bicarbonate (NaHCO3) have a lot of similar chemical properties because they both contain carbonate ions (CO32-) and hydrogen ions (H). Specific similar chemical properties include:1

All can be dissolved in water to form an alkaline solution that neutralizes acidic substances. 2.It can participate in the acid-base anti-Zheng reaction and release carbon dioxide gas.

3.can react with acidic oxides to form the corresponding salts and water. 4.

can be decomposed at high temperatures to release carbon dioxide gas. 5.It can be used as a baking powder to promote swelling and fermentation in food.

The difference is that sodium carbonate is more alkaline, while the hydrogen ions in the sodium bicarbonate cleft plexus make it appear weaker alkaline. In addition, they also differ in crystal structure and chemical formula.

Fellow, I really didn't understand, I can be more specific.

Sodium carbonate (Na2CO3) and sodium bicarbonate (NaHCO3) have a lot of similar chemical properties because they both contain carbonate ions (CO32-) and hydrogen ions (H). Specific similar chemical properties include:1

All can be dissolved in water to form an alkaline solution that neutralizes acidic substances. 2.It can participate in the acid-base anti-Zheng reaction and release carbon dioxide gas.

3.can react with acidic oxides to form the corresponding salts and water. 4.

can be decomposed at high temperatures to release carbon dioxide gas. 5.It can be used as a baking powder to promote swelling and fermentation in food.

The difference is that sodium carbonate is more alkaline, while the hydrogen ions in the sodium bicarbonate cleft plexus make it appear weaker alkaline. In addition, they also differ in crystal structure and chemical formula.

The aqueous solution of sodium carbonate is alkaline and corrosive, and can metacompose with acids, as well as with some calcium salts and barium salts. The solution is alkaline and can make phenolphthalein red.

Stability. It is more stable, but it can also decompose at high temperatures to produce sodium oxide and carbon dioxide.

Thermodynamic functions.

State of thermodynamic function at (, 100k): solid.

Hydrolysis reaction. Due to the hydrolysis of sodium carbonate in aqueous solution, the ionized carbonate ions combine with the hydrogen ions in the water to form bicarbonate ions, resulting in the reduction of hydrogen ions in the solution, leaving ionized hydroxide ions, so the pH of the solution is alkaline.

Reacts with acids. Take hydrochloric acid, for example. When the hydrochloric acid is sufficient, sodium chloride and carbonic acid are generated, and the unstable carbonic acid immediately decomposes into carbon dioxide and water. This reaction can be used to prepare carbon dioxide.

1. The chemical formula of sodium bicarbonate is NAHCO, commonly known as baking soda.

2. Sodium bicarbonate is an inorganic salt, white crystalline powder, odorless, alkaline, soluble in water. It decomposes slowly in moist air or hot air to produce carbon dioxide, which is heated to 270 m3 and completely decomposed. In case of acid, it decomposes strongly to produce carbon dioxide.

3. Sodium ions are the normal needs of the human body and are generally considered non-toxic. However, excessive intake may cause alkalosis, damage the liver, and induce high blood pressure.

4. Sodium bicarbonate solids above 50 begin to gradually decompose to form orange sodium carbonate, water and carbon dioxide gas, which is often used as a leavening agent for making biscuits, pastries, steamed bread and bread. Sodium bicarbonate will remain sodium carboisolate after the action, and using too much will make the finished product have an alkaline taste.