What are the physical and chemical properties of ozone?

Physics: At room temperature and pressure, ozone is a light blue gas with a special odor, and its density is greater than that of oxygen. Liquid ozone is dark blue with a boiling point of degrees Celsius, while solid ozone is purple-black with a melting point of -251 degrees Celsius.

Chemical: Unstable, extremely oxidizing, can be used for bleaching and disinfection.

Chinese name] ozone.

English name: ozone

Structure or Molecular Formula].

o atoms form bonds with sp2 hybrid orbitals. The shape of the molecule is V-shaped.

Electron structure formula [relative molecular weight or atomic weight].

Density] Gas density (

0℃，g/l）；Liquid density (-150, g cm3 melting point ( ) solid) -251

Boiling point ( ) liquid) -112

Properties] The thick layer of gaseous ozone is blue, with a special odor, and the smell is similar to that of chlorine when the concentration is high; Liquid ozone is dark blue, solid ozone is purple-black.

Ozone (O3) is an allotrope of oxygen, which is a light blue gas with a peculiar odor. The molecular structure is triangular, the bond angle is 116°, its density is times that of oxygen, and its solubility in water is 10 times that of oxygen. Ozone is a strong oxidizing agent with a redox potential in water, second only to fluorine (, and its oxidizing capacity is higher than that of chlorine ( and chlorine dioxide ().

The reason why oxygen and ozone have different chemical properties is that their molecular structures are different. It doesn't matter if the number of electrons in the outermost shell is the same.

Oxygen is O2 and ozone is O3, and the molecular structure is different between the connected oxygen atoms! Covalent electrons! The amount and location of the determined; Generally speaking, the oxygen atoms that make up oxygen and ozone should be the same (8 protons, 8 neutrons), but there are also 18o and 17o (the relative atomic mass of oxygen is an oxygen isotope of 18 (17)), but the number of protons is constant, ozone is made up of 3 oxygen atoms, and oxygen is made up of 2 oxygen atoms.

Oxygen is one of the components of air and is colorless, odorless, and tasteless. Oxygen is denser than air, with a density of grams in the standard condition (0 and atmospheric pressure 101325 Pa), soluble in water, but very little soluble. At a pressure of 101 kPa, oxygen turns into a pale blue liquid at about -180 degrees Celsius and a snowflake-like pale blue solid at about -218 degrees Celsius.

Oxygen is a gas necessary for combustion and respiration of animals and plants, oxygen-rich air is used for medical treatment and high-altitude flight, pure oxygen is used in steelmaking and cutting and welding metals, and liquid oxygen is used as an oxidizer for rocket engines.

Ozone is an allotrope of oxygen, and at room temperature, it is a blue gas with a special odor. Ozone is produced when oxygen in the atmosphere undergoes photochemical reactions, so the ozone layer is formed at a vertical altitude of 15 25 km above the ground, and its concentration is.

Ozone (O), also known as superoxide, is an allotropic form of oxygen (O), and at room temperature, it is a light blue gas with a special odor. Ozone is mainly found in the ozone layer in the lower stratosphere, 20 to 35 km above the Earth's surface. At room temperature and pressure, the stability is poor, and it can decompose into oxygen by itself.

Ozone has the taste of grass, inhaling a small amount is beneficial to the human body, inhaling excessive amounts has a certain harm to human health (non-flammable, pure substance) Oxygen can be turned into ozone by electric shock.

Ozone has strong oxidizing properties, is a stronger oxidant than oxygen, can undergo oxidation reactions at lower temperatures, such as oxidizing silver to silver peroxide, leading sulfide to lead sulfate, and potassium iodide reaction to form iodine.

It is used as a strong oxidizing agent, bleaching agent, fur deodorant, air purifier, disinfectant and disinfectant, and disinfection and deodorization of drinking water. Ozone can be used to replace many catalytic oxidations or high-temperature oxidations in chemical production, simplifying production processes and increasing productivity. Liquid ozone can also be used as an oxidizer for rocket fuel.

Ozone has a disinfection function Ozone, also known as oxygen-rich, tri-oxygen, superoxygen, is one of the strongest oxidants known to be available, which can oxidize and denature the protein shell of bacteria, fungi and other bacteria, thereby killing bacterial propagules and spores, viruses, fungi, etc. Ozone kills Escherichia coli, streptococcus and Staphylococcus aureus at more than 99%, and can kill hepatitis viruses and cold viruses. Ozone has outstanding bactericidal, disinfectant and degrading pesticide effects, and is considered to be a high-efficiency and broad-spectrum fungicide.

Ozone can sterilize and purify the air, prevent cross-infection of diseases, and remove odors in bedrooms, living rooms, kitchens, bathrooms and other places. Ozone gas has the effect of sterilization, disinfection, mildew prevention and dust mite removal on indoor bedding, clothing, carpets, wardrobes, shoe cabinets, coins, etc. The most suitable way to use ozone disinfection is to dissolve ozone in water to form so-called "ozone water".

Some developed countries in Europe and the United States call "ozone water" "universal water".