pyridine, 2,3-dichloro-5-fluoro-

What is the main use of 2% 2C3 + - + dioxy + - + 5 + - + alkyne to it? The "2,3-dioxy-5-alkyne to it" mentioned here is difficult to exactly correspond to a common thing within the knowledge system involved in "Tiangong Kaiwu".
"Tiangong Kaiwu" is a scientific and technological book written by Song Yingxing in the Ming Dynasty, covering many fields such as agriculture and handicrafts. However, after searching the original text of "Tiangong Kaiwu", there is no record that exactly matches it.
Or this is an extremely rare and special chemical substance or concept, not the category described in "Tiangong Kaiwu". Or there may be deviations or errors in the information given, making it difficult to answer accurately in classical Chinese according to "Tiangong Kaiwu". If clearer and more accurate information can be provided, a more appropriate explanation can be made.

Dideuterium three-dioxide-5-deuterium to its physical rationality, is the one with the value of investigation. Among them, dideuterium three, composed of dideuterium atoms and one oxygen atom. It has special physical rationality, such as melting, boiling, and normal water.
First of all, the melting of dideuterium three is slightly higher than that of ordinary water. Due to the large amount of deuterium atoms, the molecular force is different, so it requires higher energy to be able to make solid water.
Furthermore, boiling is also higher than that of ordinary water. The increase in the amount of molecules increases the attractive force of the molecule. To make the molecule overcome the attractive force to escape from the surface, more energy is required, so the boiling temperature rises.
And dioxide, its properties cannot be ignored. Oxidation is usually the color and taste of the product, but under specific conditions, it can be liquid or solid. Its density is large, it can dissolve in water and form carbonic acid. This is an important chemical property, and it also affects its physical properties. For example, the solubility in water also plays a role in the performance of liquid and water.
to 5-deuterium to it, this is a special kind of thing. Its physical properties make it different from other things. 5 - The physical properties of deuterium, such as density and hardness, are special due to the intervention of deuterium atoms and special properties. Its density or due to the amount of atoms and the arrangement of atoms, the similar materials are different; in terms of hardness, or due to the interaction of atomic energy and energy, the specific value is given.
Of course, the physical properties of dideuterium three-dioxide-5-deuterium are different due to the differences in atomic properties, objects and properties. This difference makes up its unique physical properties, which are important for scientific research and multi-domain research.

Is 2% 2C3 + - + dioxy + - + 5 + - + alkyne stable to its chemical properties? This is a question about the properties of substances. In the description of "Tiangong Kaiwu", although it is not directly stated, it can be deduced according to its reasons.
Dioxy is often in an active state. Oxygen likes to combine with other things in order to achieve a stable state. Dioxy is also active and easy to react with surrounding substances. It interacts with water vapor or other gas components in the air to produce new compounds.
And 5-alkyne, alkyne substances, carbon-containing carbon three bonds, this bond has a high energy, causing alkyne to have many active chemical properties. It is prone to addition reactions, such as addition with hydrogen, halogens, etc., to reduce the energy of carbon-carbon three bonds and achieve a more stable state.
As for "to it", if it is the direction of a specific reaction or transformation, the chemical properties of the product also vary depending on the reaction. Or after the reaction, the product is more stable than the original dioxy, 5-alkyne, or still active, depending on the specific situation of the reaction.
Generally speaking, 2% 2C3 -dioxy-5-alkyne is to it. Without special treatment or transformation, the chemical properties are mostly unstable. Because of its composition and structure, it is often easy to react with other substances to tend to a more stable state.

To make dioxy, a salt of carbonate and a strong acid are required. Limestone (calcium carbonate) and dilute hydrochloric acid are often used. The method is as follows:
Prepare the wide-necked bottle, double-hole plug, long-necked funnel, conduit, gas collector, sink, etc. Place the limestone fragments in the wide-necked bottle, plug its mouth with double holes, and insert a long-necked funnel into one hole, so that the lower end of the funnel is immersed in acid to prevent gas from escaping; insert a catheter into the other hole to pass gas.
Take an appropriate amount of dilute hydrochloric acid and slowly inject it into the wide-necked bottle from the long-necked funnel. When calcium carbonate meets dilute hydrochloric acid, a chemical reaction occurs. The formula is: CaCO
+ 2HCl = CaCl < p > + H < p > O + CO < p >. Carbon dioxide is generated and derived through the conduit.
Because its density is greater than that of air and it can dissolve water, it is collected by the method of upward air discharge. Extend the conduit to the bottom of the gas collection cylinder to make the air in the bottle exhausted. When the test is full, set the wooden strip on fire at the mouth of the bottle. If the wooden strip goes out, the gas is full.
As for the production of phosphorus pentoxide, phosphorus can be burned in the air. Take an appropriate amount of red phosphorus, put it in a burning spoon, light it on the alcohol lamp first, and quickly enter the gas collection cylinder containing oxygen. Phosphorus and oxygen combine violently, generating a large amount of white smoke, which is phosphorus pentoxide. The reaction formula is: 4P + 5O ² = ignition = 2P ³ O. Phosphorus pentoxide is a white solid, which is active and easy to absorb moisture. It should be sealed and stored after collection.

In Guanfu City, the price of dioxygen, trihydrogen, carbon monoxide, phosphorus pentoxide and other things often changes from time to time, varies from place to place, and is related to the state of supply and demand. It is difficult to generalize.
In terms of dioxygen, in ordinary times, it is mostly used by industry and people's livelihood. If it is a pure product for medical use, the price may be slightly higher, between a few dollars and two silver lines per liter; while for ordinary industry, the price is slightly lower, or only a few cents per liter of silver lines.
As for trihydrogen, the price is also very different due to its production method and purity. Pure three hydrogens are difficult to produce and require huge labor costs. The price per liter may reach several taels or even tens of taels of silver lines; however, if it is an ordinary purity commonly used in industry, the price per liter may be around a few dollars of silver lines.
Carbon monoxide is mostly a by-product of industrial production. In the market, if it is used on a large scale, the price may be calculated by two catties, and the price per catty is about a few dollars of silver lines; if the amount is small, or according to the liter bucket, the price per liter is also between a few cents and a dollar of silver lines.
Phosphorus pentoxide, due to its wide range of uses and narrow quality, the price is also different. For fine chemicals, the quality is high, and the price may be two lines of silver per catty; if it is used for ordinary agricultural purposes, it may only be a few dollars of silver per catty.
The price of these things is not constant. It really depends on changes in the market and the balance between supply and demand. Businesspeople must judge the situation in order to observe the rules of its price and make a profit.