The phenomenon of reaction between ethylene and bromine water is the discoloration of the orange-yellow solution and the phenomenon of layering after standing, with the upper layer being a transparent water layer and the lower layer being a colorless oily liquid layer.
Ethylene (also known as ethylene) is a colorless, odorless gas insoluble in water, chemical formula C?H?, molecular weight of 28.06, is an important organic compound.
Bromine water is a chemical reagent, a mixture formed by mixing water and bromine monomers. Bromine water is an orange-yellow liquid, and decomposition produces oxygen and hydrobromic acid.
The reaction between ethylene and bromine water is a typical addition reaction and an important experimental demonstration in organic chemistry.
When the reaction between ethylene and bromine water (hydrogen bromide solution) occurs, the following phenomena will be observed:
1. Color change: the most notable phenomenon is that the color of the bromine water gradually changes from orange to colorless. This is because when ethylene reacts with bromine water, the resulting product contains bromine ions (Br?), and these ions cause the color change.
2. Gradual lightening of the solution: The bromine gas (Br?) in the bromine water is gradually consumed, resulting in a gradual decrease in the concentration of the solution, which gradually makes the solution light.
The chemical formula for this reaction is H2C=CH2+Br2→CH2BrCH2Br.
The chemical equation expresses the addition reaction that occurs between ethene and bromine water, in which the double bond of ethene is broken, and the two bromine atoms are each added to the carbon-carbon double bond of ethene to form 1,2-dibromoethane. This reaction is a representative saturated addition reaction that converts unsaturated ethylene to saturated dibromoethane and also demonstrates a change in the structure of an organic molecule.
Ethylene's wide range of applications
1, polyethylene products and building materials: ethylene is a key raw material for the manufacture of polyethylene (PE) plastics. Polyethylene is a common plastic used in the manufacture of a variety of products, such as packaging materials, containers, pipes, household goods and so on. Vinyl products are used in construction as insulation, thermal insulation, floor coverings, etc. to help improve the performance and comfort of buildings.
2, synthetic rubber and packaging materials: ethylene can be used in the manufacture of synthetic rubber, such as styrene-butadiene rubber, ethylene-propylene rubber, etc., these rubbers have a wide range of applications in the field of tires, seals and so on. Plastic films made from ethylene are widely used in food packaging, agricultural mulch film, industrial packaging and other fields, with the advantages of durability, transparency, tear resistance and so on.
3, medical supplies and personal care products: vinyl products are widely used in the medical industry, such as infusion bags, medical equipment shells, surgical supplies. Ethylene derivatives are commonly used in the manufacture of cosmetics, shampoo, conditioner and other personal care products.