1 - The main use of acid dogs is in the fields of agriculture and engineering, and its function is great. In the way of transportation, acid dogs have the ability to disinfect bacteria. It can be disinfected, used to clear the mouth and environment. In case of epidemics, the things that acid dogs disinfect can be used to disinfect bacteria, prevent their spread, and promote the well-being of the people. Ancient epidemics were raging, and people used this disinfectant to disinfect the homes and places of patients, blocking the spread of epidemics and saving people's lives. In terms of engineering, acid dogs are also indispensable. In the field of metallurgy, it can help improve the gold. It contains the golden stone of gold, which can be dissolved by the acid dog, and the gold can be refined. For example, the smelting of gold, this can improve the quality of its products, making the utensils more solid and durable. Furthermore, in the work of printing and dyeing, the sour dog can be used as a help. The dye can better adhere to the fabric, making the color last longer, and the dyed cloth is beautiful and not easy to fade. And in the field of chemical research, the sour dog is also commonly used. Scientists use its characteristics to conduct general anti-chemical research, to clarify the nature of materials and the law of anti-chemical, to promote the progress of chemical science, and to provide many beneficial results for people's livelihood. In addition, sour dogs play an important role in health protection, work promotion, scientific research assistance, etc., and are indispensable.

Silver halide is an important class of compounds. It has many unique physical properties. First of all, its optical properties. Silver halide is extremely sensitive to light. Under light, silver halide can decompose. Take silver bromide as an example. When illuminated, silver bromide decomposes into silver atoms and bromine atoms. This reaction is the core principle of photography. In a darkroom, silver bromide coated on film decomposes to different degrees according to the intensity of light after encountering light. It decomposes more in strong light and less in weak light. Then it leaves different light and dark images on the film. After development, fixing and other steps, visible photos can be obtained. Furthermore, the solubility of silver halide also has characteristics. In common solvents, silver halide has very little solubility. For example, silver chloride, silver bromide, and silver iodide are all insoluble in water, and the solubility decreases in sequence according to the order of silver chloride, silver bromide, and silver iodide. This property can be used for ion detection and separation. If there are chloride ions in the solution, adding silver nitrate solution will generate white silver chloride precipitation; if there are bromine ions, a light yellow silver bromide precipitation will be formed; if there are iodine ions, a yellow silver iodide precipitation will be formed, whereby different halogen ions can be identified. In addition, the color state of silver halide also has characteristics. Silver chloride is a white solid, silver bromide is a light yellow solid, and silver iodide is a yellow solid. This different color state is also an important basis for identification in chemical experiments and analysis. In addition, the crystal structure of silver halide is also valuable for research. Its crystal structure determines many physical and chemical properties. The different radii of different halides make the crystal structure of silver halide slightly different, which in turn affects its stability and optical properties. Silver halide is widely used in photography, chemical analysis, materials science and many other fields due to its unique physical properties. It is an indispensable substance in chemical research and industrial production.

Silver halide is a kind of silver-containing halide, which is unique in chemical properties. It is easy to decompose when seen in light, which is the main characteristic. In photography in the past, silver halide relied on this property. When light is projected on a film coated with silver halide, the silver halide absorbs photon energy, and then decomposes to produce silver atoms. The equation for this decomposition reaction, taking silver bromide as an example, is:\ (2AgBr\ stackrel {light }{=\!=\!=} 2Ag + Br_ {2}\). Furthermore, the solubility of silver halide is also different. In water, the solubility of silver chloride, silver bromide, and silver iodide decreases sequentially. Silver chloride is a white precipitate, silver bromide is light yellow, and silver iodide is yellow, which is insoluble in water and dilute nitric acid. However, silver fluoride is soluble in water, which is very different from the rest. This difference in solubility is due to the difference in the force between halogen ions and silver ions. The radius of halogen ions gradually increases from fluorine to iodine, and the covalent components of the interaction with silver ions gradually increase, resulting in a change in solubility. And silver halide has photosensitivity and can be used to make photosensitive materials. Because it is sensitive to light, it can chemically change under the action of light, and the image can be retained by processes such as development and fixing. And silver halide is also used in some analytical chemical precipitation titration, using its solubility difference and precipitation color change to determine the content of halogen ions or silver ions. In summary, silver halide is characterized by light decomposition, special solubility and photosensitivity in terms of chemical properties, and has important uses in many fields.

The method of taking 1-bromobutane is as follows: First, the raw material of n-butanol-bromic acid is mixed with sulfuric acid, and the reaction is common. This is the usual method. Under the catalysis of sulfuric acid, n-butanol-bromic acid is biochemically reduced, and sulfuric acid is used as a catalyst to promote the reaction, so that the group of n-butanol is replaced by bromine atoms to generate 1-bromobutane. The inverse equation is roughly:\ (C_ {4} H_ {9} OH + HBr\ stackrel {H_ {2} SO_ {4}} {\ longrightarrow} C_ {4} H_ {9} Br + H_ {2} O\). In the operation, the control of the reaction rate is not high, and it is easy to produce side effects, which will increase the amount of sulfuric acid. And the amount of sulfuric acid is also considered, and more or less will affect the reaction effect. Second, n-butanol and phosphorus tribromide can be used. Phosphorus tribromide can make n-butanol reactive, so that the group is reduced to bromine atoms, and 1-bromobutane is obtained. This inverse phase and, with less side effects, the product is reduced. Reverse formula:\ (3C_ {4} H_ {9} OH + PBr_ {3}\ longrightarrow 3C_ {4} H_ {9} Br + H_ {3} PO_ {3}\). However, phosphorus tribromide is corrosive, and when used, it is necessary to be careful and take preventive measures, and the cost of this raw material is relatively high. Third, the addition of butene bromide can also be obtained. The addition of butene can be added to the addition of bromide, following the, the atom is added to the containing more carbon atoms, and the bromine atom is added to the containing less Carbon atoms to generate 1-bromobutane. The inverse equation is as follows:\ (CH_ {3} CH_ {2} CH = CH_ {2} + HBr\ longrightarrow CH_ {3} CH_ {2} CH_ {2} CH_ {2} Br\). This method has high atomic utilization and conforms to the concept of colorization. However, it is necessary to pay attention to the control of the reaction parts, such as the degree of reaction, the degree of catalysis, etc., in order to ensure the benefit of reaction and the yield of the reaction.

Mercury is extremely toxic, and all precautions should not be ignored during storage and transportation. When storing, choose the first heavy container. It should be stored in a strong and tight metal or glass container. The cover is not easy to chemically react with mercury, which can keep the mercury stable. And it is necessary to ensure that the container is tightly sealed to prevent the volatilization of mercury from escaping. Furthermore, the storage place should be a cool, dry and well-ventilated place. The volatilization rate of mercury is related to temperature. The higher the temperature, the faster the volatilization, so low temperature can reduce its volatilization. And because mercury has a certain conductivity, the storage place should avoid the place of discharge and strong magnetic field, so as not to affect its properties. When transporting, safety protection must be comprehensive. Transportation personnel need to be professionally trained and familiar with the characteristics of mercury and emergency response methods. Packaging must be solid and reliable. In addition to the sealing of the container containing mercury, the outer layer should be added with buffer materials to prevent damage to the container due to collision. Transportation vehicles should also be clean and should not be mixed with reactive objects. During transportation, environmental factors such as temperature and humidity should be closely monitored and adjusted in a timely manner according to the situation. If mercury leakage unfortunately occurs, do not panic. Coat it with sulfur powder as soon as possible to combine mercury with it to form mercury sulfide, reduce toxicity, and then properly clean it up and do not allow it to spread. In short, the storage and transportation of mercury is related to personal safety and environmental safety. All links need to be carefully carried out and strictly abide by regulations to ensure that nothing goes wrong.