Soda is a transliteration of SODA, and its chemical formula is Na2CO3. The scientific name of sodium carbonate is soda, also known as soda ash or baking soda powder. The one with crystal water is called hydrated sodium carbonate.
Anhydrous sodium carbonate is white powder or fine particles, easily soluble in water, and its aqueous solution is alkaline. It has strong hygroscopicity and can absorb moisture in the air to form lumps.
Among the three kinds of soft drinks, sodium carbonate is the most widely used. It is a very important chemical product and an important raw material for glass, soap, textile, paper making, leather making and other industries. It is also used in metallurgical industry and water purification. It can also be used to make other sodium compounds.
2. Sodium bicarbonate
The chemical formula of baking soda is NaHCO3. Scientific name of sodium bicarbonate, common name of baking soda.
Baking soda is a white crystal, easily soluble in water, and its aqueous solution is weakly alkaline. In hot air, it can slowly decompose and release a part of carbon dioxide; When heated to 270℃, carbon dioxide is completely decomposed and released.
2 sodium bicarbonate = = sodium carbonate +H2O+ carbon dioxide
Baking soda has many important uses in production and life. In fire extinguishers, it is one of the raw materials to produce carbon dioxide; In the food industry, it is the main raw material of baking powder; It is also a common raw material for making cold drinks; Medically, it is a medicine for treating hyperacidity.
Step 3: soda
Baking soda is the common name of sodium thiosulfate, also known as hypo (transliteration of hypo), with five crystal waters (Na2S2O3? 5H2O), so it is also called sodium thiosulfate pentahydrate.
Sodium bicarbonate is colorless and transparent crystal, easily soluble in water, and its aqueous solution is weakly alkaline. Weathering in dry air above 33℃, losing crystal water. It is stable in neutral and alkaline solutions and will decompose rapidly in acidic solutions.