1, and the chemical formula of baking soda is NaHCO3. Scientific name of sodium bicarbonate, common name of baking soda.

2. Baking soda is the common name of sodium thiosulfate, also called hypo (transliteration of hypo), with five crystal waters (Na2S2O3? 5H2O), so it is also called sodium thiosulfate pentahydrate.

Second, the chemical properties are different.

1, baking soda is 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. Soda soda is a 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.

Third, the roles are different.

1, 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.

2. Soda has a strong complexing ability and can form a complex with silver bromide. It can be used as a fixing agent. Soda also has strong reducibility, which can reduce substances such as chlorine. It can also be used as a dechlorination agent for bleached cotton fabrics. In addition, baking soda is also used for tanning, electroplating and extracting silver from ores.

References:

Baidu encyclopedia-sodium bicarbonate

References:

Baidu encyclopedia-sodium thiosulfate