Recently, my friend started to make a move into the gastronomic world and decided to make a difference in the gastronomic field. I was a little surprised to hear this news. "Don't you just like to eat and don't bother to do it?" How can takeaway not satisfy you anymore? "He said he should still do it, he wanted to eat and make it himself, healthy and hygienic. Looking at his expression, I thought something must have happened to him. "What happened?" He smiled and asked me what was the difference between soda and baking soda. (At the end of the article, I have a personal summary of the key points of the article, if you are in a hurry, you can jump directly to the end to see the summary.) ）
Soda and baking soda are really two things that a lot of people don't know. Next, let me introduce it.
Soda, chemically known as sodium carbonate, with the formula Na2CO3. There are many aliases, in addition to soda, there are soda ash, alkali, alkali surface, alkali ash, stone alkali, mouth alkali, soda crystal, water-containing soda, washing soda, washing alkali sodium, alkali crystal, crystalline. Usually white powder or fine-grain crystals, odorless, strong water absorption, easy to form hard blocks. Decomposed at high temperature, it is easily soluble in water, and the aqueous solution is alkaline.
Although soda is also called soda ash or alkali, it belongs to the salt class, not to the alkali class. The name is soda because when soda is dissolved in water, the aqueous solution is alkaline. Long before the synthetic soda, the working people of our country have discovered the existence of this substance and used it in daily life. So the name has been used ever since.
The use of sodium carbonate is very extensive, chemical industry, pharmaceutical industry, metallurgical industry, ceramic industry, rubber industry, machinery industry and printing and dyeing industry, etc., is a chemical raw material that we cannot obtain. In daily life, we can see the figure of sodium carbonate in the kitchen, which is generally used to wash oil stains, and is added when making buns and steamed buns.
Baking soda, chemically known as sodium bicarbonate, with the formula NaHCO3. Its aliases are not as many as soda, except for baking soda, only sodium bicarbonate and acid sodium carbonate. Usually a white crystalline powder, odorless and easily soluble in water. It slowly decomposes in moist or hot air, producing carbon dioxide. Heating is easy to decompose, when heated to 270 ° C complete decomposition, the decomposition products are sodium carbonate and water, carbon dioxide.
The use of sodium bicarbonate is also very extensive, basically coinciding with the industry used in sodium carbonate, but not as much as sodium carbonate. In food processing, it is one of the most widely used loose agents for the production of biscuits, bread, etc., and is the agent of carbon dioxide in soda beverages; it can be combined with alum as alkaline baking powder, and can also be combined with soda ash as a civil stone alkali; and can also be used as a butter preservation agent.
So what is the difference between sodium carbonate and sodium bicarbonate? First of all, their chemical formula can be seen that sodium carbonate is heavier, and under the same weight, sodium bicarbonate has more weight than sodium carbonate. From their appearance, sodium carbonate is mainly white powder, white and bright, sodium bicarbonate is mainly white crystalline, white and dark. Sodium bicarbonate is unstable, so it breaks down in the air, but sodium bicarbonate is just a water-absorbing agglomeration. In an aqueous solution of the same weight, sodium carbonate is more alkaline, and sodium bicarbonate is only weakly alkaline. This is well understood, as sodium bicarbonate hydrolyzes to form sodium carbonate.
In fact, sodium carbonate and sodium bicarbonate still feel similar, but they still have to be distinguished in use. Especially in industrial use, the difference is still very large. The problems in the family are actually not very big, and they are relatively rare. And now people are buying edible alkali, which is a mixture of sodium carbonate and sodium bicarbonate.
Personally feels like a summary of the focus:
1. Soda, chemical name is sodium carbonate, chemical formula is Na2CO3. Usually white powder or fine-grain crystals, odorless, strong water absorption, easy to form hard blocks. Decomposed at high temperature, it is easily soluble in water, and the aqueous solution is alkaline.
2. Baking soda, chemical name is sodium bicarbonate, chemical formula is NaHCO3. Usually a white crystalline powder, odorless and easily soluble in water. It slowly decomposes in moist or hot air, producing carbon dioxide. Heating is easy to decompose, when heated to 270 ° C complete decomposition, the decomposition products are sodium carbonate and water, carbon dioxide.
3. The difference between sodium carbonate and sodium bicarbonate. First of all, their chemical formula can be seen that sodium carbonate is heavier, and under the same weight, sodium bicarbonate has more weight than sodium carbonate. From their appearance, sodium carbonate is mainly white powder, white and bright, sodium bicarbonate is mainly white crystalline, white and dark. Sodium bicarbonate is unstable, so it breaks down in the air, but sodium bicarbonate is just a water-absorbing agglomeration. In an aqueous solution of the same weight, sodium carbonate is more alkaline, and sodium bicarbonate is only weakly alkaline.
Disclaimer: All the information in this article comes from the Internet and books (if it is invaded, delete), and I am not a professional, the content Written only represents personal views, and may also have errors and omissions. The original intention is to share and communicate with everyone, welcome to correct and add, do not like to spray, thank you!
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