Baking soda, also known as sodium bicarbonate, is a mildly alkaline antacid and also a kitchen product

Soda is the common name of sodium thiosulfate, also known as Hypo (transliteration), with five crystal water (Na2S2O3·5H2O), so it is also called sodium thiosulfate pentahydrate.
Bicarbonate of soda is colorless and transparent crystal, soluble in water, aqueous solution shows weak alkalinity
1. Soda
Soda is the abbreviation of Soda, and its chemical formula is Na2CO3. It has many names, such as sodium carbonate, in addition to Soda, also known as Soda ash or Soda powder.
Anhydrous sodium carbonate is white powder or granule, soluble in water, aqueous alkaline. It has strong moisture absorption, can absorb the moisture in the air and formed lumps. Ten water is colorless crystalline sodium carbonate, placed in the air at room temperature, lose become monohydrate sodium carbonate crystallization water. Whatever ten water or monohydrate sodium carbonate, sodium carbonate heating will become anhydrous sodium carbonate. Sodium carbonate is stable, heat is not easy to decompose. Meet acid can emit carbon dioxide:
Na2CO3+2HCl====2NaCl+H2O+CO2↑
Sodium carbonate solution can also absorb carbon dioxide to form sodium bicarbonate:
Na2CO3 + H2O + CO2 = = = = 2 nahco3
In three kinds of soda, sodium carbonate USES the most popular. It is a very important chemical products, glass, soap, the important raw material for textile, paper making, leather industry, metallurgical industry and water purification are also use it. It can also be used for the manufacture of other sodium compounds. As early as the 18th century, it and sulphuric acid, hydrochloric acid, nitric acid, caustic soda and listed as one of basic chemical raw materials, three acid two alkali. In daily life, the soda also has many USES, such as it can be directly used as detergent, add some soda in steamed buns, can in the fermentation process of neutralizing acid.
2. The baking soda
The chemical formula for baking soda is NaHCO3. It also has many names, including sodium bicarbonate, which is also called sodium bicarbonate or carbon acid
Sodium acid. In addition to baking soda, there are baking soda, baking soda and heavy alkali.
Baking soda is a white crystal that dissolves in water and is weakly alkaline in aqueous solutions. When heated to 270℃, all carbon dioxide is released.
2NaHCO3====Na2CO3+H2O+CO2↑, it can also act with acids (such as hydrochloric acid) to release carbon dioxide:
NaHCO3 + HCl = = = = write NaCl + H2O + CO2
These properties of baking soda make it have many important USES in production and life. In the food industry, it is a major raw material of baking powder; It is also a common ingredient in the manufacture of cool drinks; Medically, it is a remedy for gastric acid overload.
3. Sodium hyposulphite
Soda is the common name for sodium thiosulfate, also known as Hypo (transliteration), with five crystal water (Na2S2O3·5H2O), so it is also called sodium thiosulfate pentahydrate.
Bicarbonate of soda is a colorless and transparent crystal, easily soluble in water, and weakly alkaline in aqueous solution.
Na2S2O3+2HCl====2NaCl+H2O+S↓+SO2↑
The reaction formula: AgBr+2Na2S2O3====NaBr+Na3 (Ag(S2O3)2), according to this property, it can be used as a fixing agent.
Baking soda also has a strong reduction, can reduce chlorine gas and other substances.
Na2S2O3+4Cl2+5H2O====H2SO4+2NaCl+6HCl, therefore, it can be used as a dechlorination agent after cotton fabric bleaching.