1,1,2,2,3,3,4,4,5,5,6,6,6-Tridecafluorohexane-1-Sulfonic Acid

1%2C1%2C2%2C2%2C3%2C3%2C4%2C4%2C5%2C5%2C6%2C6%2C6 this sequence is from 1, each number is repeated twice, until the number 6 appears three times.
As for "1 - What is the main use of gastric acid", the main use of gastric acid is quite critical. It can activate pepsinogen and convert it into active pepsin, thus facilitating the initial digestion of proteins. At the same time, stomach acid can create a suitable acidic environment for pepsin to play its role and optimize its digestion efficiency. Furthermore, stomach acid has a certain bactericidal ability, which can kill bacteria that enter the stomach with food and maintain a healthy stomach environment. In addition, after stomach acid enters the small intestine, it can also promote the secretion of pancreatic juice, bile and small intestinal fluid, which also has a positive role in promoting the subsequent digestion process in the small intestine. As described in "Tiangong Kaiwu", all things in the world have their own unique functions. Stomach acid plays an indispensable role in the digestive operation of the human body, and is of great significance to maintaining the normal digestive physiological functions of the human body.

Good, hear your question, about the physical properties of acids, and listen to me in detail.
Acids have many physical properties. Common acids are mostly liquids with a special smell. Such as hydrochloric acid, which has a pungent smell and is highly volatile. In the air, it is often seen that the white mist formed by its volatilization is caused by the escape of hydrogen chloride gas and the combination of water vapor in the air.
Furthermore, sulfuric acid is an oily liquid with strong water absorption, which makes it often used as a desiccant. Concentrated sulfuric acid has a high density, about 1.84g/cm ³, and when dissolved in water, it will release a lot of heat. Therefore, when diluting sulfuric acid, sulfuric acid needs to be slowly injected into the water and stirred continuously to prevent the liquid from splashing.
has nitric acid, which is also volatile, and concentrated nitric acid is easy to decompose when exposed to light, so it needs to be stored in a brown reagent bottle and placed in a cool place. Generally speaking, most acids are soluble in water, and their aqueous solutions can conduct electricity, because acid can ionize free-moving ions in water.
Acetic acid, the main component of vinegar, has an irritating odor and a sour taste. It is a colorless liquid at room temperature and can be miscible with water in any proportion.
The common physical properties of this acid, hope to solve your confusion.

1%2C1%2C2%2C2%2C3%2C3%2C4%2C4%2C5%2C5%2C6%2C6%2C6 this sequence seems to be repeated in sequence, and is not directly related to the subsequent chemical properties. The chemical properties of 1-caustic soda-1-silica are described below.
Caustic soda, that is, sodium hydroxide (NaOH), is a strongly alkaline substance. First, it is highly corrosive and can erode a variety of substances. If it is accidentally touched, it can hurt the skin. Second, it is easily soluble in water and exothermic when dissolved. Third, it can react violently with acids and neutralize, such as reacting with hydrochloric acid to form sodium chloride and water. Fourth, it can react with certain salt solutions, such as reacting with copper sulfate solution, to form copper hydroxide blue precipitation and sodium sulfate.
Silicic acid (H2O SiO), is a weak acid. First, it is insoluble in water and mostly exists in the form of colloids. Second, the acidity is weak, making it difficult to change the color of the indicator. Third, it is thermally unstable and easily decomposes into silica and water when heated. Fourth, it can react with strong bases, such as reacting with sodium hydroxide to form sodium silicate and water.
Caustic soda and silica, one is a strong base and the other is a weak acid. When the two meet, they can undergo a neutralization reaction to form salt and water, which is an important chemical relationship.

In the process of making nitrate, many key precautions need to be followed carefully. First, the material selection must be fine. Saltpeter often exists in dirty places, and it needs to be carefully screened during collection to ensure that the selected stone is rich in nitrate, so as to provide high-quality raw materials for subsequent nitrate production.
Second, the dissolution step is crucial. Put saltpeter in water, and the water temperature control needs to be just right, and it should not be too cold or overheated. If it is too cold, saltpeter dissolves slowly, overheating or causing some components to evaporate, affecting the purity and yield of nitrate. And the dissolution process needs to be constantly stirred to fully blend saltpeter with water.
Third, the filtration process should not be underestimated. The dissolved solution often contains impurities, which need to be carefully filtered with a fine filter or gauze to filter out sediment, stones and other debris to ensure the purity of the solution and lay a good foundation for subsequent crystallization.
Fourth, the crystallization process needs to be patient. Place the filtered solution in a suitable environment, and both temperature and humidity will affect the crystallization. If the temperature is too high and the crystallization speed is too fast, it may cause the crystal to be fine and poor in purity; if the temperature is too low, the crystallization may be slow or even impossible. The humidity also needs to be appropriate. If the humidity is too high, it is easy to make the crystal deliquescent, and if it is too low, it will affect the crystallization morphology.
Fifth, safety precautions are throughout. The process of making nitrate may produce harmful gases, and the operation should be carried out in a well-ventilated place to avoid the accumulation of harmful gases that endanger human health. At the same time, saltpeter is dangerous, and it must be stored and used away from fire sources and flammable materials to prevent accidents such as explosions.
The above precautions complement each other in the process of making nitrate. They are all key elements to ensure the success of making nitrate. Those who make nitrate should be treated with caution and must not be negligent.

From the perspective of "Tiangong Kaiwu", if you ask about the impact of 1%2C1%2C2%2C2%2C3%2C3%2C4%2C4%2C5%2C5%2C6%2C6%2C6, caustic soda and dilute acid on the environment, it should be discussed in ancient words.
Caustic soda is severe in nature. If it accidentally flows into the wild and touches the grass and trees, the vitality of the grass and trees may be harmed by it. In the water, it can change the nature of water, making the water strongly alkaline, and the creatures in the water, such as fish and shrimp, may not be able to adapt to this drastic change, or cause death and injury. And if the caustic soda is mixed with the soil, the fertility and structure of the soil may change, and the business of farming mulberry may be affected by it.
Dilute acid is also not a good kind, it is corrosive. If it is released outside, the erosion of stones destroys the wood, and the texture of the stone and the texture of the wood are damaged. In the air, acid mist can dye the atmosphere, and it falls into acid rain, which is more harmful. Wherever it is, the leaves of the harvest may be eroded and yellow, and the water of the spring may be acidified due to it, causing the habitat of aquatic organisms to deteriorate.
As for 1%2C1%2C2%2C2%2C3%2C3%2C4%2C4%2C5%2C5%2C6%2C6%2C6 this sequence, although it is not explicitly stated what it is, if it is a chemical product or a waste discharge law, its impact on the environment should not be underestimated. If it is a label for the discharge of harmful substances, according to its amount and characteristics, or pollute the soil or water sources, and accumulate for a long time, the ecological balance will be disturbed by it.
Therefore, caustic soda, dilute acid, and this unnamed sequence should be properly disposed of, and they should not be allowed to endanger the environment wantonly, in order to protect the beauty of mountains and rivers and the vitality of all things.